Malicious PDF — malware analysis report

Static analysis result for SHA-256 903422778f09a632…

MALICIOUS

PDF

38.2 KB Created: 2020-10-28 05:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 899a8022e3ac7b2866ff4877b86c980f SHA-1: c4271a3e63b0c0d6bb687ef0626e106b90c766cc SHA-256: 903422778f09a6329b6a55f470520b6f973c2ba582e33de8f54efedd4e7a33e4
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://cctraff.ru/strik?keyword=compass+shipping+grenada+contact In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387241/normal_5f98da69c1e47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378406/normal_5f920c251267c.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/mesalologixanugofiso.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/ridejobevaga.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/vobetaxasifov.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/9480142.pdfIn PDF document text
    • https://mufanebix.weebly.com/uploads/1/3/4/3/134349193/kuxavak_navux.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/ac0884e4-8581-4618-8071-ea4cc4243f85/pink_panther_easy_piano_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81bc55c6-82eb-45fe-88e0-88a6d6050291/jesafubifijugudenawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a2e0be-090f-48f1-a608-d8c165862493/64053839176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1322ef8f-be4c-4898-b5c7-1634c9ac290e/21955672436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d2ca22-8cba-4c47-833e-ff0deb17b512/mamevuzitaxeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/madden_19_trade_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3560/2339/files/29825912261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4330/files/vudizitidamizotajozedad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/fire_emblem_gba_cheat_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2251/5865/files/famatopud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/foxit_reader_print_protected.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/gawovepalaselex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2877/7640/files/androdumpper_apk_for_android_4.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_off0000550b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550B 5360 bytes
SHA-256: 6b6019afb402b3030aae02553ed4d52752c35dcd97e633ac6cf43a3a1a3ae8dc
font_01_sfnt_off0000671b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671B 10812 bytes
SHA-256: abcb05239d468bd35ec5042fc000d14912eaee32f8b69dfe365de0222e3727bb

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