Malicious PDF — malware analysis report

Static analysis result for SHA-256 536211dce37b8f36…

MALICIOUS

PDF

37.6 KB Created: 2020-07-28 18:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dffbf1a3e1338a8a64ed8cea1ea474c1 SHA-1: 2d15ab7e0661e45838cb479b98a9e238b06ab371 SHA-256: 536211dce37b8f36f817423b80d537723db09e463c5dc1794071a1c90a8c39ce
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Alms army information security training', suggesting a lure to entice users to click the malicious link. The presence of a link farm further indicates an attempt to distribute content or malware through a network of linked PDFs.

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.cc/pify?keyword=alms+army+information+security+training In PDF document text
    • http://files.workingmolossersunited.com/uploads/1/3/0/7/130739603/tuwiwefazuwatiboweb.pdfIn PDF document text
    • http://files.nileshsp.com/uploads/1/3/1/8/131871625/07cf401a3ea82b.pdfIn PDF document text
    • http://files.adewaleadeyeyeauthor.com/uploads/1/3/0/8/130874115/6343663.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/1/0438/0501/6226/files/15368629679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/dopus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/sepiladubud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4932/8533/files/voxonabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77603652905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/54062858146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/21108184830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/32866925320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/7447970689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/bewituzoxun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20675343362.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 7

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_off00005606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5606 5176 bytes
SHA-256: a8cc0c7a4014bdccdc6f8120b0c5f332c1c982995fc25462e7d100615fec1eed
font_01_sfnt_off0000678c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678C 9820 bytes
SHA-256: 0af080330f6903a602a825b382fcedf76c2e7073c36e1c3f11025fae52e45d90

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