Malicious PDF — malware analysis report

Static analysis result for SHA-256 1980b9d835d6a976…

MALICIOUS

PDF

36.0 KB Created: 2020-10-03 05:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5e162befb212bde96c92b91295556f9b SHA-1: b7c474aeefe36a7f15d35b6886d87e9dcea36e04 SHA-256: 1980b9d835d6a97600e7626dcaf312180c84148f96c3a2bbbe002796fbee611e
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://gettraff.ru/strik?keyword=aegis+legend+200w+latest+firmware In PDF document text
    • http://files.midwestshamansconference.com/uploads/1/3/0/7/130739889/2677738.pdfIn PDF document text
    • http://redubowiv.fccgreensburg.com/uploads/1/3/0/7/130739267/0f8d89ab43b62b.pdfIn PDF document text
    • http://zusilak.derickbingham.com/uploads/1/3/1/3/131398140/456baeb9b.pdfIn PDF document text
    • http://files.crystaldull.com/uploads/1/3/1/1/131164402/kigobopitatuke-fiwexetagu.pdfIn PDF document text
    • http://files.bfpartyrentals.com/uploads/1/3/1/6/131607075/jabenep-xapanasexanijuk.pdfIn PDF document text
    • https://site-1038412.mozfiles.com/files/1038412/64059946449.pdfIn PDF document text
    • https://site-1037840.mozfiles.com/files/1037840/tusotokugevajamusog.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/puritusujoxewidurotivi.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/kuvubopad.pdfIn PDF document text
    • https://site-1036829.mozfiles.com/files/1036829/maxejetugulobi.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/1/0440/8036/5733/files/zkteco_u160_live_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4242/6017/files/42436231292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/92768616370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5852/3031/files/pokemon_conquest_anorith_perfect_link.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/somivikefufoposefawevowij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3755/8437/files/67980226283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8141/2007/files/soxofafunixel.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_off00004d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D17 5580 bytes
SHA-256: 6e53ce23023c03c20876300aae05e451c37722871ffe72a2f5219cee9920a375
font_01_sfnt_off00006014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 10120 bytes
SHA-256: dab26ccf001160f72973f891fe1cee0bc79fc87f8291164817d157fb896377d8

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