Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5097f8e68796ea6…

MALICIOUS

PDF

44.1 KB Created: 2020-10-17 00:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 430d18cca42420979c9413bd8ee77966 SHA-1: 7b6ea1410856f61f199e9ec652c105a772912c0b SHA-256: f5097f8e68796ea6419ed2516595f158ca0cbf8c4e53bf974a7fbd8736c1dfeb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ttraff.me/123?keyword=frigidaire+microwave+fpbm3077rfa+manual In PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/1466846.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/9b53ec72f.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/xekazes_tipis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f8984fe232e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f872bd4d748e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f87f99b520f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368479/normal_5f8772453e392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_5f8a0b6e210b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f8781773d1b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_5f8880ab7ece5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f8a0d48ee7ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f872b5da7c69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5f8830997d8ec.pdfIn 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://cdn.shopify.com/s/files/1/0435/1698/5508/files/32615316294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1242/6397/files/how_to_check_boxes_in_word_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c586c7d-fec4-4e6e-90c9-1ee10cf10983/xujesiwejumakogize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f061753-c583-4a9a-9281-fb42800ca80c/13546517374.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e76f33-3e8f-4a07-a0da-895ead4d6099/solekite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0462d67c-ad0b-4e07-bbda-7a8d4fd1948c/rebufavisasatofek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6347/5869/files/xajaxosovof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8281/2066/files/manual_camera_paid_app_free_download.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5590 5732 bytes
SHA-256: 15414395f3310b56770fc7e9ced1dfc06cc01be10b65cf200e735d1925b921e1
font_01_sfnt_off0000690b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690B 13680 bytes
SHA-256: ee0e403707c0a8aa21bb2aea1772b146277976b4d87871bfea561baf4f376117
font_02_sfnt_off00009340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9340 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361