Malicious PDF — malware analysis report

Static analysis result for SHA-256 75418cbfa2da76b8…

MALICIOUS

PDF

46.3 KB Created: 2020-08-21 23:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc777ebf4a2f5001a5d9d71f74725789 SHA-1: 6f6feb08dc048e94c604d4533f5a8caf6c00bf55 SHA-256: 75418cbfa2da76b8bea9e6483873d115b724fb9936aba402388b2f0238cfc998
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying it as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains a URL pointing to a malicious redirector, suggesting the primary goal is to lead users to harmful content. The presence of many external PDF links also indicates a potential SEO manipulation or link farm tactic.

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=emotional+songs+videos In PDF document text
    • http://files.adelaide-pilates.com/uploads/1/3/0/7/130739761/zijupepojumoviziwese.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/1/0437/6202/4605/files/binomische_formeln_aufgaben_schwer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3617/1688/files/broederbond_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1468/3815/files/cambridge_english_proficiency_2_chomikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/20749279402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/zegol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5521/7814/files/gitimerujasomoxofuxasoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vonabubabosutogoxofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/jaclyn_rotondi_ruberti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/bepunabavuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8106/8697/files/regoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/janejesibidikev.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 8

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_off00006a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A59 5064 bytes
SHA-256: 1afe524ed66fbfb03bf6838910327797a3dba8e572c9746a930ab9513f3af9c6
font_01_sfnt_off00007b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B81 16124 bytes
SHA-256: 394782659548d88856abee74f09f2e413a2055970aa73386e742e4d8bb1ad734

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