Malicious PDF — malware analysis report

Static analysis result for SHA-256 162ea3a4c635613c…

MALICIOUS

PDF

35.1 KB Created: 2020-08-22 22:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8da1841346298086560f47928d2d269a SHA-1: 455ea0e7f3afe4a3731f0dd2a6bb5c284859f417 SHA-256: 162ea3a4c635613c6a415ac43beb055c0608aabdd70ef12e991390964ec5f962
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. This redirector, 'https://ttraff.cc/pify?keyword=centrelink+aged+care+assets+form', is designed to lure users with a seemingly legitimate form title. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended to distribute malicious content or phish for information.

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=centrelink+aged+care+assets+form In PDF document text
    • http://mimuzuzo.rankinperformingarts.com/uploads/1/3/0/7/130738732/fefonutepuke.pdfIn PDF document text
    • http://gepivage.villacreative.org/uploads/1/3/0/7/130740522/dedet-lonugud-fizuloj.pdfIn PDF document text
    • http://files.theoldpostofficesuffolk.com/uploads/1/3/0/8/130814432/5628960.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/1/0428/7663/3247/files/gukadazegekiburiwukudowew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/27095391544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/definition_of_accounting_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/export_bookmarks_google_chrome_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/25402055975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/11043470158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/zotege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/910538438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/new_holland_lawn_tractor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8090/files/66745331706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7303/4654/files/53548061523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9989/6475/files/jurnal_buah_belimbing_wuluh.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_off00004c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C5A 5308 bytes
SHA-256: 6f16d830d534e47cee0ca1a2daff226c3b57ce8995ba3e758bdd5c0a7fadb6cd
font_01_sfnt_off00005e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 9780 bytes
SHA-256: 0184024d3a0f724f7ff29b59113b7bd187be6aea18bace9f4abe3526c6d01de4

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