Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a4052020f9ae3a…

MALICIOUS

PDF

42.8 KB Created: 2020-07-31 21:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 456361b6788a44ba94bf9f5264ffab28 SHA-1: 0544e290ad70faee106996efecd876daf2d7e649 SHA-256: 92a4052020f9ae3aae10c15814ad92e47ff01229f39514c8cf44832fa9e51903
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=ccnp+switch+lab+manual+2nd+edition+pdf', which is designed to lure users into downloading or visiting malicious content. The document body also contains this URL, reinforcing the social engineering aspect. No scripts were extracted, limiting the analysis of direct payload execution.

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=ccnp+switch+lab+manual+2nd+edition+pdf In PDF document text
    • http://files.youngchaelee.com/uploads/1/3/0/8/130813357/5563595.pdfIn PDF document text
    • http://files.cafedatalkalamode.com/uploads/1/3/1/4/131483550/3bbbf7.pdfIn PDF document text
    • http://files.everydayarteveryday.com/uploads/1/3/1/4/131453256/revitev-nivisejikunogub-genadukawizumor-kevabuwobax.pdfIn PDF document text
    • http://files.uniquedezhines.com/uploads/1/3/1/3/131379306/3fe8d256e04f.pdfIn PDF document text
    • http://files.emact.org/uploads/1/3/1/6/131636914/forafarip-bumebanufu-dexowopigeki-jimerosomepevin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/pipekifagoxinudot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/46220545606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9322/0758/files/pewixerinubazulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/tinow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/fetoxulakam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/sibunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/41731655068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/44409003010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9200/8357/files/78701217754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8262/8766/files/kozamakasetiwiluza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/degeromupipezemufof.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE6 5568 bytes
SHA-256: c097d990871a5bc7ba4ecd8a0bd0e03abda5763d7770a5e8ec43dad9ab52993d
font_01_sfnt_off00006fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB1 9336 bytes
SHA-256: 921d49b404325696850d81d2d5e41e59c881c64110ae2a11b4c58daf614ee977
font_02_sfnt_off00008fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176