Malicious PDF — malware analysis report

Static analysis result for SHA-256 544fec803f6be5de…

MALICIOUS

PDF

46.2 KB Created: 2020-07-29 16:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 109810f3b017b8ab7ba51680cb79f5ad SHA-1: 91d16ff663d90524a1b696d9037e33791f694f23 SHA-256: 544fec803f6be5ded1b2dda31670213d4427e6a251f14f5a3113d181c4e93a0f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=isometric+view+from+orthographic+views+pdf In PDF document text
    • http://files.studyguidelive.com/uploads/1/3/1/4/131437702/372383.pdfIn PDF document text
    • http://files.gatewayoflight.com/uploads/1/3/0/7/130739542/verakarexa_nagojubiro_pimivoso.pdfIn PDF document text
    • http://files.dogparkbook.com/uploads/1/3/0/8/130813694/rewedobepogu_kalusigexenasiw_mirikexarofo.pdfIn PDF document text
    • http://files.raiseyourvibration.yoga/uploads/1/3/1/3/131382470/7993636.pdfIn PDF document text
    • http://files.silverspoondinner.com/uploads/1/3/0/7/130740323/47d5d3d32ceb.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/1/0438/7792/5019/files/35742144883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2373/5720/files/gediwawodab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/saramogozorizazuden.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5143/files/bipazelexofigovarafirowav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dofupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2669/2771/files/fedajununewumoledirozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/nezefowuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/75603383711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/gezirolufetikunidupuxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/wigegonigexevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/ronolowuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56966684837.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 8

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_off000077d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D9 5308 bytes
SHA-256: c6829ac152ca1b1575c62d5b2ab2a3f1ffde6d832111349b7d4308efe5c03bac
font_01_sfnt_off000089fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FE 9856 bytes
SHA-256: 8083a7ac85552d56c22f53632937481f6a1d02bf52bb1dcaae554f9ff025c481

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