Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1fd897a0ac41ca…

MALICIOUS

PDF

41.0 KB Created: 2020-08-06 08:55:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18f5403486d7227fa841a05677825355 SHA-1: e67341dacb1a9cde42802c1f11d924ad72aba821 SHA-256: fb1fd897a0ac41ca85b008b62d5287ced12323a4d72c64d53d9473c2137be3dc
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service, which is a common technique for distributing malware or leading users to phishing sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The document body, though heavily obfuscated, contains the malicious URL, suggesting the intent is to trick the user into clicking it. The ML classifier also strongly indicates 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.cc/pify?keyword=descriptive+research+paper+pdf In PDF document text
    • http://files.littlervrentals.com/uploads/1/3/1/3/131384583/2196908.pdfIn PDF document text
    • http://files.aspendivas.com/uploads/1/3/1/4/131437064/bfdfe792c32664.pdfIn PDF document text
    • http://files.genwhy.com/uploads/1/3/1/0/131070982/110071.pdfIn PDF document text
    • http://files.avocadomama.com/uploads/1/3/0/8/130873872/xujukune.pdfIn PDF document text
    • http://files.davidmartinezmagic.com/uploads/1/3/0/7/130738836/ripuvagin.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/1/0427/4061/3286/files/mafijimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0483/3441/files/2001_dodge_dakota_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/livuletojekuzudebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/97497477905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0966/2366/files/logoraxedinewavozanewuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuxekenosagulowagegur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/2020_cadillac_sts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/weteduzoleretowev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/mojoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/forasefojisozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/32580168166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/pimafelatefopapixelepejav.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 7

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_off000062d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D7 5268 bytes
SHA-256: f7b01c241c8a2f90e873c990113f891dc1e11e5e7ac735481cf42a681824199e
font_01_sfnt_off000074cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CC 10008 bytes
SHA-256: 1bd31cea5e7c8983488f522ca75f4321fa7d313a6a5c41626c80933c2be930eb

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