Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fd38343a8762cd…

MALICIOUS

PDF

41.4 KB Created: 2020-08-07 10:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2642a06641bae4030d6469cf273816d SHA-1: 7053150921d886af6acffdec76801f50cb75d529 SHA-256: c9fd38343a8762cde9a6398d566b0ed5ae49ac56204d09caad83eaf429356596
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'History of cadastral survey pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further indicates malicious intent to drive traffic to potentially harmful 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=history+of+cadastral+survey+pdf In PDF document text
    • http://jiwoxugem.walescoastpath.info/uploads/1/3/2/8/132814930/nozigol.pdfIn PDF document text
    • http://files.mypersonalgifter.com/uploads/1/3/0/7/130775306/zewuwixilafulaw.pdfIn PDF document text
    • http://files.ninemillionbicycles.com/uploads/1/3/1/4/131453651/wowekilomerijulig.pdfIn PDF document text
    • http://files.lezgetbaked.com/uploads/1/3/0/7/130775393/8953828.pdfIn PDF document text
    • http://sogaginuk.blackwomensdayofmeditation.com/uploads/1/3/0/8/130814423/vasixoxapimew-podaralelun-zokimironixos-fezepewipese.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/1/0431/4886/9789/files/gumomag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/78871477330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8899/3703/files/random_integer_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/1950712109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/vibarejifodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/bachianinha_no_2_partitura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/86451701196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/100_squat_challenge_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/lusiwirumusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/cities_by_population.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 6

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_off00006334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6334 5272 bytes
SHA-256: b2604aac8f400dfb5e12e5146a45695518ec8ba4243e729b57004b6d3e4f310e
font_01_sfnt_off00007540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7540 10348 bytes
SHA-256: 2ef4884827a1e907ea784759c4ad9dc03238fc2403c6288820126b5277301b3b

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