Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93652922dfffe38…

MALICIOUS

PDF

68.1 KB Created: 2020-10-19 16:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: eaeec833d424b010a6073d6e41487417 SHA-1: accc2723d0908db3ea55206b10439a27fa6e7250 SHA-256: a93652922dfffe38970953deefc13a4a6df79445fe4a532ab4a07f6e261d5079
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=%25E0%25B8%25A7%25E0%25B8%25B4%25E0%25B8%2598%25E0%25B8%25B5%25E0%25B8%259B%25E0%25B8%25A5%25E0%25B8%2594%25E0%25B8%25A5%25E0%25B9%2587%25E0%25B8%25AD%25E0%25B8%2584+nokia+e71+%25E0%25B9%2582%25E0%25B8%2597%25E0%25B8%25A3%25E0%25B8%25A8%25E0%25B8%25B1%25E0%25B8%259E%25E0%25B8%2597%25E0%25B9%258C%25E0%25B8%25A5%25E0%25B9%2587%25E0%25B8%25AD%25E0%25B8%2581%25E0%25B8%25A3%25E0%25B8%25AB In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_5f89e6b42124b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f8b81bc595dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f8bb1257c08f.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/6738325.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/4258576.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/6577349.pdfIn PDF document text
    • https://nosekuge.weebly.com/uploads/1/3/2/7/132740467/bonogisupu.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/wevov.pdfIn PDF document text
    • https://cctraff.ru/strik?keyword=%25E0%25B8%25A7%25E0%25B8%25B4%25E0%25B8%2598%25E0%25B8%25B5%25E0%25B8%259B%25E0%25B8%25A5%25E0%25B8%2594%25E0%25B8%25A5%25E0%25B9%2587%25E0%25B8%25AD%25E0%25B8%2584+nokia+e71+%25E0%25B9%2582%25E0%25B8%2597%25E0%25B8%25A3%25E0%25B8%25A8%25E0%25B8%25B1%25E0%25B8%259E%In PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0693ae8c-d3ff-4780-9cdd-c293c8945463/50489729265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d284643e-dd91-453a-a91e-e9d2473bff11/23673745030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9eed719-62bb-4251-bf41-6ea7e2dc85ae/athlean_xero_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e46eb8e-67e6-4a5a-9184-c16fb25b1699/cartoon_online_family_guy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06c8b5c-03b9-4a88-9788-0e5891861b88/40944507537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/4080/2469/files/altivar_31_inverter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0646/8511/files/ffbe_sheratan_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/fishman_loudbox_mini_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8366/9412/files/rumubifupezujugil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0205/1235/files/bcg_matrix_of_pepsico_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3211/7916/files/satoshi_kon_movies_on_netflix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/pekawuroxuwafolog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/ootp_perfect_team_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3848/2332/files/88910743654.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000096db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x96DB 16648 bytes
SHA-256: b59d608f2d29546eddd7aec4b03c6e3fd43f20926177fc25b30a133bbf25c34b
font_00_sfnt_off00006f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F64 4184 bytes
SHA-256: c7541ecf2493772f2d09d12b748912aeb9ebce7486ca5adf10f2e4ef5205cd34
font_01_sfnt_off00007d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D94 9476 bytes
SHA-256: f799f654d0ee32df83aaec5c0d725a73fac3606315bd6348babf69262e3da1be
font_03_sfnt_off0000c49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49B 13628 bytes
SHA-256: 073472a13737e8734f498fd1cb5c49d40be31871bf8618322fb810faf6742ff1
font_04_sfnt_off0000ef23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF23 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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