Malicious PDF — malware analysis report

Static analysis result for SHA-256 108b459a396aa602…

MALICIOUS

PDF

40.7 KB Created: 2020-10-06 11:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 5fbaa50bd05529307ccf454a79de5fc5 SHA-1: f768cb6de642216869ba3b3c9c6c96d881d8d63d SHA-256: 108b459a396aa602868697d8d0b7cc61726783898b8383606ec3411a7ce7e6fb
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://ggtraff.ru/strik?keyword=leather+sewing+kit In PDF document text
    • http://files.studio-luxe.com/uploads/1/3/0/7/130740141/wukowuwikeves_sumorizimav_sadobepa.pdfIn PDF document text
    • http://files.ironsistersusa.com/uploads/1/3/1/4/131414134/jemikusugusalum.pdfIn PDF document text
    • http://files.popcollection.store/uploads/1/3/0/7/130776735/0a1863520e7f1e.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/1/0483/9440/4008/files/falorurotinozijadupajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1252/5727/files/romopar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8113/7821/files/48652987683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87c66b7b-53a8-4008-a26e-2ae02c82f1c0/tamubepadasiluvaxop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edcad5d2-d51b-44d7-8f40-2290fffa869c/ruzirowute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c2438b-85ac-4be7-a521-9244a3d5a899/linuledavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5764559c-46b2-45dc-ac69-16f87c58beb5/doletegaletobabilunofojel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f814270-48b4-4360-b771-acab93371da0/kiripopomuton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/63080872753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5400/6182/files/20005398548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/renitesematekaziwevixod.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 5012 bytes
SHA-256: aec6b66b526dc501ed10344d25e62d14bcb72f335c8cc531fd7dad81f7e59103
font_01_sfnt_off00007344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7344 10300 bytes
SHA-256: 85d78804bd5e42fe91caf9183f21ba199e2a242405f81e83f38321d525bec12d

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