Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c7d1e73ba4d0f6…

MALICIOUS

PDF

72.4 KB Created: 2020-08-06 15:15:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7861ed91cf6310094742a04b94886243 SHA-1: 42b209c55082b30282fd9867cfe7efa18cb3553d SHA-256: b1c7d1e73ba4d0f6b427a6a5a6a9bb78f5088f02afa3c6b83fd4958d084df0c6
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector, specifically 'https://ttraff.com/pify?keyword=article+370+in+english+pdf'. This suggests the document's primary purpose is to redirect users to malicious content. The presence of a PDF link farm heuristic further supports the malicious intent by indicating the document is part of a larger scheme to generate traffic or distribute malicious links. No scripts were extracted from this sample.

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=article+370+in+english+pdf In PDF document text
    • http://files.eastbrooklynhousing.com/uploads/1/3/2/6/132681194/nusamek.pdfIn PDF document text
    • http://files.sandiegocountyrecordersociety.org/uploads/1/3/1/0/131071037/gexogofi.pdfIn PDF document text
    • http://files.walshems.com/uploads/1/3/0/9/130969993/6fcdc8a43a94.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/1/0427/7701/8524/files/65605057235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2117/1873/files/penulobur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/42605822064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/jewigolifem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/9071557528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1048/2588/files/weralenerarer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/barrier_method_of_family_planning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4641/2188/files/49347575587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/5378484770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/6228263579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/foxawedatajuposusozotew.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_off0000de1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1E 5584 bytes
SHA-256: 0d9a0407c5a3c0fb011f4b91c06ec7efe8dbb9bac791c9c3064df06b83e3b981
font_01_sfnt_off0000f12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12A 10372 bytes
SHA-256: a57a85aef4514e783275600adb662705b52a7894b19190618333d8971703c4c3

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