Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0d5985a90062c63…

MALICIOUS

PDF

46.0 KB Created: 2020-08-11 05:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3fe2d5eac36e6881652cc646709b532 SHA-1: e4d8b735a276bef094108f2c8ec3e29aff904793 SHA-256: c0d5985a90062c632a371c0895b384d2fcf3de3d2033cc55cf28a58c69dea71e
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One critical link points to a redirector at 'ttraff.cc', suggesting an attempt to obscure the final destination or distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure.

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=teori+sumber+daya+manusia+pdf In PDF document text
    • http://files.aazk2020.org/uploads/1/3/2/8/132814250/nedeka.pdfIn PDF document text
    • http://files.kauaimusiceducation.org/uploads/1/3/1/4/131410299/lelulonulusuditob.pdfIn PDF document text
    • http://files.rpstech.org/uploads/1/3/2/3/132303209/muropafipunigagukumi.pdfIn PDF document text
    • http://pojonale.hazelandbluedesignstudio.com/uploads/1/3/0/8/130814328/dafavurusebibifodi.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/1/0438/4777/8469/files/16779250730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0033/files/tablet_media_query.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8522/6403/files/solo_leveling_novela_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/apostles_doctrine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9544/8997/files/reading_comprehension_beginner_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/5099406151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/76063215357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8333/files/54726358439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0538/6657/files/90072602432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0963/7530/files/4125714779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6434/5255/files/11583785472.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_off00007692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7692 5344 bytes
SHA-256: 6bb35c8ebb28492421f88a76c8b3cd4bf39eb3b20c6104d067e0ed594e0487d8
font_01_sfnt_off000088ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AC 10200 bytes
SHA-256: d1438b0d50030edb133dee9897ddd0091034bf945134c1c8b96a144289c2d044

Open this report in the interactive analyzer, or submit your own file for analysis.