Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c74f27a886a58b…

MALICIOUS

PDF

63.9 KB Created: 2020-08-01 11:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 678d081f2aef35bb49a9fa3c1f1eaa1c SHA-1: e7d35bb92f17909e038e06e60704b9b5d2b742b4 SHA-256: 05c74f27a886a58b4de068e65e35906e84424f0dbc75d1a5e205a17e076657a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a known malicious domain, identified as a redirector for SEO spam and phishing lures. The document body, though heavily obfuscated, contains text related to a 'cat 246 skid steer service manual' and a URL that matches the malicious redirector, suggesting a phishing attempt to trick users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=cat+246+skid+steer+service+manual In PDF document text
    • http://files.suzanne-redois.com/uploads/1/3/0/9/130969433/2c58959a82bd.pdfIn PDF document text
    • http://files.rachellepaintings.com/uploads/1/3/1/3/131383581/76049ebb.pdfIn PDF document text
    • http://files.bureaunl.com/uploads/1/3/2/6/132695730/kiwekokuruloz_gezef.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/1/0433/3902/2485/files/vonuxifum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/14683943085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/zeragekusosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0441/files/67345225080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/pesinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/va_laisse_couler_mes_larmes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/mewabopimuworajebuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3917/0466/files/sigotalaruwijolexazogis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/begifitumon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/vofawijaxonup.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 5

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_off0000af7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF7A 5488 bytes
SHA-256: f1a0d15234dd2067d26644cdac82164bbf556bc20d9b5c3bb01cd3aa5941eb1a
font_01_sfnt_off0000c221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC221 15736 bytes
SHA-256: 4a606b3fb28a2cdbce23836536199c0e7e9395dc5ac8cd1a0756097050b67e3f

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