Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1730244aa1f9e71…

MALICIOUS

PDF

109.8 KB Created: 2020-08-10 11:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ffd50b72cb35f5ae66dc45a470fdd40 SHA-1: f31a294c96e2867a575dec61c8a22fdb7d334449 SHA-256: c1730244aa1f9e718643faa597a112e4e12e3b4c2258ae798c5fe1890724815c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cuales+son+los+aines+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links also suggests a link farm, further supporting the malicious intent of driving traffic to external sites. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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=cuales+son+los+aines+pdf In PDF document text
    • http://mutekozo.jannamparker.com/uploads/1/3/0/7/130738870/369889.pdfIn PDF document text
    • http://files.sorellacalisthenics.com/uploads/1/3/1/4/131483138/leleviruzexuwomaz.pdfIn PDF document text
    • http://diwup.thisbostonlife.com/uploads/1/3/1/1/131164250/lujogujigo-jezutegago-mizamonazowi.pdfIn PDF document text
    • http://files.wardwatkinsinsurance.com/uploads/1/3/1/4/131453588/5374814.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/1/0438/1373/2512/files/cable_length_voltage_drop_calculation_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/waxegoxosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8200/6171/files/biwogiranataverupovamag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/nemezixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/94121611821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/wofapedirufije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/xbox_backup_creator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5061/files/89194088624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/59404863161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/lonilolobuvog.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 8

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_off000171ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171CA 4844 bytes
SHA-256: e0be3b79f681a3fc627d5c66b672373a02097594045bf3337f43c89b89727e58
font_01_sfnt_off00018259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18259 11836 bytes
SHA-256: 78cfc0536b3628e8016a0947db944c076b0c4ca4c1fc1ae340ca1e26479e7e91

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