Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f40d6b14cf3d7a…

MALICIOUS

PDF

54.6 KB Created: 2020-10-19 02:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: cc9aec085ae3e0457a38a5cc67c1f5c6 SHA-1: c29eea0f14ba81e14c7c546d0c631063bc118516 SHA-256: d3f40d6b14cf3d7a1d4f79d26b4895fdf330497e6289c560026fef41bea747c5
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/123?keyword=shimano+altus+rd-m310+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f8a516302331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5f8cb8feb60af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f8a4a8855ae2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5f87f14dc6a66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/473a3578-36b3-4c4b-8f91-643cd03dde64/19649686136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9fd19e-4e31-46f9-86b6-80a5a0c7f684/nolodofodiviwuragujese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c9b144-a578-4453-b064-c195a74ff4f9/44509349758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b953d7df-62d9-4a33-97ec-f2a62f21fde5/70248726802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/do_make_collocations_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2451/7790/files/54303442013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4439/5930/files/25613961092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0557/6869/files/dead_zed_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6375/3885/files/domunudawiwagameji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0623/2229/files/30553633860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9785/2577/files/tellymaza_hindi_tv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8508/5870/files/4317545584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9198/3013/files/best_goal_live_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3089/6026/files/80018637768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/foreign_investment_act.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_off00008f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5F 5556 bytes
SHA-256: 28f316af44d9fae75d8c5f28caca8bdf5e79fab012debbc26e6a21a2a20493f7
font_01_sfnt_off0000a218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA218 13880 bytes
SHA-256: e696034b494b8d75d03cd12d9e76f21e0387af49df912a5c9f5c098944f23ada

Open this report in the interactive analyzer, or submit your own file for analysis.