Malicious PDF — malware analysis report

Static analysis result for SHA-256 3746b75d878366b1…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 08:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd05577a02674890f31a8aae7f4f8ccd SHA-1: d44ff24d46e1d79662d0c6f6376a5eb0955fee82 SHA-256: 3746b75d878366b149d9e085aeff3454b70a7acfab1332cc3cc4da1be4036f6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'arbeitsschutzgesetz pdf', suggesting a lure to trick users into clicking the malicious links. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to distribute further malicious content.

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=arbeitsschutzgesetz%2528+arbschg+pdf In PDF document text
    • http://guwuwipo.thegauge.us/uploads/1/3/0/7/130775388/e7e5666942.pdfIn PDF document text
    • http://files.markbrasuell.com/uploads/1/3/2/6/132682168/lidukal.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/1/0433/4891/8440/files/vikizikupevikurak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/11218040595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/23551627444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/gubaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/dubininizarozusofux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2496/5019/files/mcquarrie_statistical_mechanics_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5665/0650/files/javascript_remove_duplicates_from_array.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2245/files/23078487514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/ccds_exam_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/fufezonimar.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 2

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_off00005f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7F 5644 bytes
SHA-256: c8f54ad10f4a47ded92af1bd16d0280944c41107651e81730730558c7be6436d
font_01_sfnt_off000072bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BB 11484 bytes
SHA-256: 9a34b56830088ce87556da50d2473a359850d9e13c7fdb65962719dcc798d816

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