Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d9557ede10cc6d…

MALICIOUS

PDF

38.0 KB Created: 2020-08-08 14:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56ecd8d5141c0d01c0a1c300c4ced7d8 SHA-1: b283987e1dbbffb59bb5b6fa5f07a25f78d28e7c SHA-256: 01d9557ede10cc6d619d0cf42786363f774dcc3ba34778af600ea71a4da62caa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL that masquerades as a utility for merging PDF files. This lure is designed to trick users into clicking through to potentially malicious content hosted on external sites. The ML classifier strongly indicates malicious intent.

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.com/pify?keyword=merge+pdf+files+into+one+adobe+reader In PDF document text
    • http://files.nickholtlcsw.com/uploads/1/3/1/6/131636697/lirexuvepabo.pdfIn PDF document text
    • http://files.cruisingwithdonandglynda.com/uploads/1/3/1/3/131384145/8947110.pdfIn PDF document text
    • http://files.gohstheatre.com/uploads/1/3/0/8/130813834/4225295.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/1/0430/4686/3005/files/makasezadaxotupuvogadasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/assignment_writing_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/bevilodowajabiwibuzijone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1208/5144/files/nasaligaxokabobafaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/92438228863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/33509725681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/goraxisoraninorewigujex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2437/files/how_do_you_bypass_a_revoked_certificate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/xazejotiloko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/babosujilirozosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/24598359295.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 4

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_off000057ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57AD 5352 bytes
SHA-256: 019eb32c553cb5ca26f769d5bb135ff40bf1c6a5225ac698999dd09615fe736f
font_01_sfnt_off000069fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69FA 9728 bytes
SHA-256: 5501d59641210373a4939a17147d074b2a6073a5359f370afbd12099af10ea30

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