Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe175861b768da41…

MALICIOUS

PDF

49.0 KB Created: 2020-07-30 18:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5442c0a309085a2190cf680491a47928 SHA-1: 77191d7f0c0065d25281494bee0936f3cd154701 SHA-256: fe175861b768da415300821f33f84ca453d7a6213b85bc42cac97fc956f932cb
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link points to a redirector, suggesting an attempt to lead users to harmful content. While no scripts were extracted, the structure and link farm indicate a delivery mechanism for further malicious activity.

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=information+theory+pdf In PDF document text
    • http://files.fertic.net/uploads/1/3/0/8/130814216/vowokis-tebafuxubolag.pdfIn PDF document text
    • http://files.iowaartists.us/uploads/1/3/1/8/131856347/tubavurapuxulub.pdfIn PDF document text
    • http://files.foxlairwest.com/uploads/1/3/2/6/132681969/2827144.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/1/0433/3695/8104/files/26500731274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/lasosikixidikavibawuzof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4616/6943/files/86601256489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/3824733822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8845/2515/files/16265410780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/fusiziwumik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/bazalolinefuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/sukajusimapefasupojofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5945/3860/files/fozuvedilasezomiwadipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/97656780958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/tibotawipufe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F81 4900 bytes
SHA-256: 2412095643dc7b97e67a0f6581f30b02de9de4bb3495f52d37956ca8eac2bcbf
font_01_sfnt_off00007ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF5 9888 bytes
SHA-256: 9fae525f9642e5e55fe668cbf410f86fc6f4ca3118b06cdc778c7076b07be524
font_02_sfnt_off0000a1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1FB 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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