Malicious PDF — malware analysis report

Static analysis result for SHA-256 6063edaddd64999b…

MALICIOUS

PDF

44.7 KB Created: 2020-10-20 08:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5a2e407504aab1e53b70b7ab76f06b96 SHA-1: 777e28fea0908183a1ba0870c18eccda02ee5ce1 SHA-256: 6063edaddd64999b9ff0fbf59347a50e35546c63d7a9323467ad11b2a4ed0704
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.ru/pify?keyword=modular+programming+in+c%252B%252B+pdf In PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/35b4f1600cf.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/8561161.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/zezofaxenuwixume.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f8a66779ae31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f885b10d5d70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373770/normal_5f8b398a55f33.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/7076005.pdfIn PDF document text
    • https://ruwopevod.weebly.com/uploads/1/3/1/3/131397973/8e30cda.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/3057652.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3948/4823/files/android_room_order_by_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/0593/3254/files/functions_of_autonomic_nervous_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/onan_emerald_1_genset_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e104cf18-4392-4a4a-915f-1f5e5271cb54/xipakusofiwuridinul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6494/0961/files/65436341359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6245/files/graco_extend2fit_3_in_1_car_seat_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5587/3699/files/15198560434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0996/4694/files/78390552807.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7074 5300 bytes
SHA-256: 35b56f149285dca5ca4a4d76739625ce5bb48a837f4d059d598b4f2ee87735c9
font_01_sfnt_off00008270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8270 10504 bytes
SHA-256: 47a0bd67809001886ae08774f9d0b64eee684aedfd72f34e36a708bd54b28fcd

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