Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6995930fdfefe41…

MALICIOUS

PDF

248.1 KB Created: 2020-08-15 06:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a37d6747a89a436893c50689d85f02a SHA-1: df5b29d33536e3a571f05fb473cb027813c3f5ee SHA-256: a6995930fdfefe41296425f553703f8adcaf2257c2befa7e25b18f6eb02c72a2
142 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=annual+report+of+apple+2018-+19'. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The heuristic 'SE_INVOICE_LURE' further supports the phishing pretext by indicating the document language is designed to trick the user into taking action. The file type is PDF, and the authoring application is wkhtmltopdf, which can be used to generate PDFs from web content, potentially to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=annual+report+of+apple+2018-+19 In PDF document text
    • http://jegos.omrocommunity.org/uploads/1/3/1/4/131407405/pinepozeremoxo.pdfIn PDF document text
    • http://files.nancyohlin.com/uploads/1/3/0/7/130775516/7055728.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/1/0432/6011/7160/files/lijesul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/60064751170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/xapasusonegotovaniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/83685559511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/hospitality_financial_accounting_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5346/9083/files/odisha_police_si_exam_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/pisotokokilaxejez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/liwopawabisit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/85256847588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/83311551387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2557/files/55765541223.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003769b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3769B 5412 bytes
SHA-256: b62558f899d520dee9047450ddf27a69b8114854fd977823ce12cff33e07f627
font_01_sfnt_off00038915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38915 16628 bytes
SHA-256: bd2ddad8557f26e42e19ffff2f68eacb7190dba38c6f5584333c997ef08be050
font_02_sfnt_off0003bc5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BC5E 16208 bytes
SHA-256: 1d4d671ae502080d93142a7eeda7a219ae6747fc4e119e8b75dad7192e420eff

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