Malicious PDF — malware analysis report

Static analysis result for SHA-256 379d192b1111eb79…

MALICIOUS

PDF

251.5 KB Created: 2020-08-08 03:28:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f134d19d4e66719a2af246d204664e91 SHA-1: 52cadf244aec030a290e2ff36daebb876ec7820d SHA-256: 379d192b1111eb798cc81623ace87b445c3385bbac9e3449bb3f60e1a87de942
142 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating a malicious redirector link. The document body, though heavily obfuscated, contains the same URL found in the heuristic. This suggests the document's primary purpose is to trick the user into visiting the malicious URL, likely for a phishing or malware distribution scheme. The urgency lure heuristic further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=carbamates+pesticides+pdf In PDF document text
    • http://nusunu.gvjhslibrary.org/uploads/1/3/1/4/131454012/64142ed2.pdfIn PDF document text
    • http://files.vickijansma.com/uploads/1/3/2/7/132712214/570834.pdfIn PDF document text
    • http://files.aimeelora.com/uploads/1/3/1/3/131398085/vovejisepak-rufuvepuzeg-jitegogor-jizowugudovo.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/1/0437/3685/8776/files/fumagotifofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4854/files/bransden_joachain_quantum_mechanics_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8230/7989/files/bach_bwv_998_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0938/4343/files/83296759418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vexib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/jaxatubisavuvewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/macbook_pro_2011_graphics_card_upgrade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3887/4532/files/las_nacionalidades_en_frances.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/93731017322.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 3

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_off00039979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39979 5316 bytes
SHA-256: 135138e8e46bafbc55ce1662ecf3175a6854d76eac39807b186d3afc491ff84c
font_01_sfnt_off0003ab6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AB6E 16932 bytes
SHA-256: e4f53e5014abd9689ea512b2c9a8ff9f7f40481b7f4eec4e7b7b647ac7cc9f4b

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