Malicious PDF — malware analysis report

Static analysis result for SHA-256 3178571233b49027…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 14:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 736579083cdf8ee9cb0cfe735f5a8c5d SHA-1: c4f98ed4b23463d34e0137a2e1e78a687440322c SHA-256: 3178571233b49027473a6eac7fd7d48e73973d28c354543d834b3d9c72152d8b
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text 'Effective audit report writing pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link.

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.com/pify?keyword=effective+audit+report+writing+pdf In PDF document text
    • http://nifazik.autismconsultnc.com/uploads/1/3/0/8/130874655/f6f2ec62cc76.pdfIn PDF document text
    • http://files.kandgmakeit.com/uploads/1/3/0/7/130739060/balalagelagufo.pdfIn PDF document text
    • http://files.abrushwithnature.studio/uploads/1/3/1/4/131406885/184799.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/1/0441/4029/8392/files/achondroplasia_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/bullet_force_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3727/5813/files/8579454736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/40876443440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/46804156390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6074/files/nuketesusalapapufojinim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/garevejarenozag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/vifanajixomiponus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6257/4750/files/60507759661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1151/0170/files/diagnostico_cancer_de_esofago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/24753169259.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_off00007328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7328 5220 bytes
SHA-256: a41ec2693ce236fa63f50c3db6c964fdd839f821a71d31fb52d71c73f6d19b47
font_01_sfnt_off00008520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8520 10420 bytes
SHA-256: e29a000d48a47370b83dc2748b282e115075b497f8f96e96541abb5f04a57ed5

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