Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b1b0e683693fca…

MALICIOUS

PDF

47.7 KB Created: 2020-08-18 16:04:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdb4c719e920ce126302aec25755429c SHA-1: c65098db70d479cafdf1e44b167e515bff430282 SHA-256: 53b1b0e683693fca9e4dc47f2b13a924ee3b929252f71167b28617581b6a503e
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious payload. The PDF also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or to obscure the malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a malicious intent to lure the user to a harmful destination.

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=altruistic+punishment+in+humans+pdf In PDF document text
    • http://vipixoj.starlightdancecamps.com/uploads/1/3/2/7/132712207/pirojidasepewogigut.pdfIn PDF document text
    • http://xadet.bgnazarene.com/uploads/1/3/0/7/130776804/wejidoma.pdfIn PDF document text
    • http://lifululet.sunshineandraindrops.com/uploads/1/3/2/7/132740978/9581297.pdfIn PDF document text
    • http://sijibi.contractgovernmentservices.com/uploads/1/3/0/8/130814328/f24a00f7a.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/1/0428/3236/3687/files/delivery_note_template_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/malwarebytes_activation_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/mamiginitibivodelumeri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6360/7445/files/lewapuwejokokimuxuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2961/files/basic_english_speaking_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9637/files/lodumuniwodefupaxulomaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0747/3821/files/aceite_romero_doterra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2140/9184/files/kopurogitozavepaxiwomasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8378/3575/files/dupisavijapunupus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/autocad_notes.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 4

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_off00007ca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA9 5384 bytes
SHA-256: 8e86811d6368c75e327d039af97b0819436d6cce2fcc9183c6a1151a012ee072
font_01_sfnt_off00008ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC6 10352 bytes
SHA-256: 70528f8ad06c182ad73971927a8be0ca9468136f44a0142369b3b100297161ad

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