Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a4fb2b2f9eed76…

MALICIOUS

PDF

56.4 KB Created: 2020-08-24 03:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dbabca51293ec7cbf833924e7fae667 SHA-1: fb916b5354ea1c559094f84cec43da442d407d72 SHA-256: 64a4fb2b2f9eed76e9b2e85da37959a68944c64e3dfc990b7505146ebda12d0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though obfuscated, contains the primary redirector URL. The presence of numerous external links, many pointing to Shopify, suggests an attempt to create a link farm or distribute content through seemingly benign platforms, ultimately leading to the malicious redirector.

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=python+format+list+of+dictionaries In PDF document text
    • http://files.lordofdwarves.com/uploads/1/3/1/3/131379396/wurago-datogepivig.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/1/0436/9491/5738/files/30006240300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1620/0863/files/shatta_wale_2019_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0313/1542/files/42500625907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/98046024876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/47901962044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/piredunizozetojulifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2227/7032/files/55843988147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9103/8118/files/sonda_vesical_demora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5924/7264/files/luxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/45012737216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/39977475660.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA2 5152 bytes
SHA-256: 8f26d7e9ccf1724911ba3f3debd4dda912b548c75a2dcfd1b56392d6575a4819
font_01_sfnt_off000080e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E9 14232 bytes
SHA-256: dc529db13dcb448bda1a82b661aaab3b4cd4fe915e28519853358555f8f14f93
font_02_sfnt_off0000addc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADDC 16620 bytes
SHA-256: e37c443e4422a9e953eb8fcd11dfa6360565e839dee4ffaa628fb8838c35acb5
font_03_sfnt_off0000c47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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