Malicious PDF — malware analysis report

Static analysis result for SHA-256 958c3c6702c7548e…

MALICIOUS

PDF

49.9 KB Created: 2020-08-21 01:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd49dc3f988a0fd66f2b58d6ab3d8a55 SHA-1: b41414b62977c559093a9df1c63da4383d9c5a12 SHA-256: 958c3c6702c7548ee87b9faf396809427b70333c485a53563291c6b70d474d66
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=sample+answer+to+form+interrogatories+california In PDF document text
    • http://fekuf.quantelab.org/uploads/1/3/0/7/130739561/5750438.pdfIn PDF document text
    • http://xarif.thirdstreetchurchofchrist.org/uploads/1/3/0/9/130969363/jefazejij-jukisifovukege-xejogixoparajaz.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/1/0431/6974/2999/files/gozibofug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/3858/9352/files/70266942283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/25305564297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3584/0932/files/bpp_acca_f7_financial_reporting_book_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6487/7471/files/47946324833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/91872859163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/95111259136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/livigutimepirapanip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71135401618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2821/files/xinunabaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7179/8436/files/febodefexaxigezamebozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/84967602202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4923/6118/files/kimomisivupeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/past_tense_irregular_verbs_worksheets_2nd_grade.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 1

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_off000085db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DB 5532 bytes
SHA-256: 353e5116c3f9e2ce6aa67f799b080031ea9ea5b716a5ee3ec51b25d5df415a3c
font_01_sfnt_off000098a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A5 10088 bytes
SHA-256: 12086ec4b77313f074b1a19796fc68ebab197454ac13e740fd3652983eec788e

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