Malicious PDF — malware analysis report

Static analysis result for SHA-256 219a101516df43e0…

MALICIOUS

PDF

42.4 KB Created: 2020-10-26 05:45:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 18f0197d2118d1c4b6677838a25c6962 SHA-1: 16b1ab8806514af64736b9a6c8f8bf8a681c51f2 SHA-256: 219a101516df43e09dbbdf28d4ab7d93ecf29c53dee3083ed3c9a0bdd78522a8
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=philips+blender+hr2094+user+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5f8debc4cf8ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367289/normal_5f87416d10c80.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006594.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006594.bin)
    • https://cdn.shopify.com/s/files/1/0483/4823/3891/files/duxaviwakisifuzepen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/equilibrium_constant_expression_aqueous.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/3140/4959/files/seraxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7481/7693/files/registers_of_scotland_registration_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/6074/0263/files/ibuypower_best_buy_warranty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8160/6340/files/things_fall_apart_novel_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5030/1590/files/45158720849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/9063/3415/files/alphabet_phonetic_anglais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7224/4900/files/hisense_tv_manual_en33926a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9086/0449/files/gozotise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/kadonowetibet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0776/0311/files/26715278324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e86f425-f244-4caa-a0b6-6d3221a4152a/cheat_codes_for_clicker_heroes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84d0f53b-7d27-4c28-bf71-2d3b37a170a1/6730343498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14a68bea-a16b-4898-a170-1481038c518d/kitsound_boombar_pairing_instruction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d5f892-9665-4ed8-970f-3b0edb24cc6a/xupebexonaxakaropop.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 extracted file (font_00_sfnt_off00006594.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 5856 bytes
SHA-256: a0df6972511d298ac226a3f8fb7a1e1e237c140ea8693bf206b9c8e3ce355562
font_01_sfnt_off00007933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7933 10388 bytes
SHA-256: 6984ebf906b7f6d61f2d264a4d898bfa25563931aa8000d1453032613c856e40