Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3b42a15f0f15c3…

MALICIOUS

PDF

38.2 KB Created: 2020-08-02 02:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a39a5868bbf589d2c2ebc2ec6fa82ff7 SHA-1: c3fd171a65083482e9605f89faadab305a6e6a75 SHA-256: dc3b42a15f0f15c3cf0174a8b267a6611592c4469d9552111db1696d0ab61b6a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting urgency, such as 'account will be terminated' and 'action required within 24 hours'. This indicates a phishing or social engineering attempt to trick the user into clicking the malicious link, which then likely leads to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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=lee+reloading+manual In PDF document text
    • http://files.en.mattarelloaway.com/uploads/1/3/2/3/132302876/260120.pdfIn PDF document text
    • http://files.vanesanieri.com/uploads/1/3/1/3/131378921/b3615de15.pdfIn PDF document text
    • http://files.dejohnsonauthor.com/uploads/1/3/2/6/132682685/35d6acc.pdfIn PDF document text
    • http://files.solacedominic.org/uploads/1/3/1/6/131606965/konisetoza.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/1/0433/0687/7080/files/73930450062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/25090841351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/90207349370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/limulobiwulalisevub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/tidewuzobavadedurozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/68910792249.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/1/0432/8462/7616/files/28912062584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7118/files/metefegelis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/zubugemubupafugeru.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 6

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_off0000585f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x585F 4908 bytes
SHA-256: 246df6681b5faab8ba16e2920f4283053b4bba2eae11efde20c1c39b0c9e8bd7
font_01_sfnt_off000068fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FE 10408 bytes
SHA-256: e8d710ab674c4d48b8572646562aeb8ebddfff6b7fc96d575ce48eb5952e4f41

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