Malicious PDF — malware analysis report

Static analysis result for SHA-256 727e82f40291607c…

MALICIOUS

PDF

40.5 KB Created: 2020-08-19 13:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b26fbd48da5bd4c17828210eed870447 SHA-1: 8b5ce2aa124ac04b6e05a6553b0025f2095fa5de SHA-256: 727e82f40291607cdc83224f4bdbe59a718c905c1bbef95eeab0db7f793d150e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'android mod games new'. This suggests a phishing or scam attempt using a link farm to distribute malicious content. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious redirector pattern.

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=android+mod+games+new In PDF document text
    • http://files.pempickleball.com/uploads/1/3/1/3/131397927/guzilasadavodu-navadajeluluv-dawikotiwuw-jiluvofutux.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/1/0438/0806/3649/files/caterpillar_t30d_forklift_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/96813667141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85286147205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2747/0235/files/batof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/35462725799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/13897010054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1887/7085/files/33577855668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3838/9925/files/65923261128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6202/4605/files/ebola_virus_infection.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000613e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 5192 bytes
SHA-256: aa038af2482d6a53b2c2e6b981c5e7ba5a4008d03a7c7b8a0963a0ded2fab054
font_01_sfnt_off000072d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D6 10212 bytes
SHA-256: 25effdb7258dee10afa4b51f78980d92e15710a96258ca0d90809bfd93715ad5