Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc0233e4a4b3152…

MALICIOUS

PDF

48.0 KB Created: 2020-08-15 02:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa40f3b1afcfab9a8ad59d8880c4c838 SHA-1: 3a1effac4da5bd4a53999fb302cdd0ce8b4f06bd SHA-256: dcc0233e4a4b3152b9c2b01a0aa45a6e5a36dcc1db7dad63ac707eb0e29c6125
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests an urgency lure. The presence of a link farm indicates an attempt to distribute malicious content widely. The primary malicious IOC is the redirector URL.

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=bnp+mf+stp+form In PDF document text
    • http://bumigow.capitalexpenditures.net/uploads/1/3/0/9/130969317/ed45296f.pdfIn PDF document text
    • http://dutinoxol.sasquatchsyndicate.com/uploads/1/3/1/3/131398540/xanusasexezirar.pdfIn PDF document text
    • http://buxelat.mirjamaigner.com/uploads/1/3/2/8/132814930/bibimudapab.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/1/0447/1390/2234/files/xowusumigofelase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7844/9307/files/74048985284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/kitomolebowadumikuwibunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/66799756871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/sopililirasetijefojizesov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/63890166566.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 2

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_off00007e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4E 4852 bytes
SHA-256: c4b09f3893d34b4414f62d314c844c1303495dc71a0dbe30c03ffd8b6da3ab3c
font_01_sfnt_off00008eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB5 10792 bytes
SHA-256: 8370abbc9da03c0e026df3ead54158b17ca65cb956d1221c7ea291d838fc3588

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