Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d72b1340f5fd5f…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 18:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5aa819132490470ef3479ece7402fe72 SHA-1: ec9b73a071739354308d1cf4b601253570edacf7 SHA-256: 83d72b1340f5fd5f7afbd10de780b3a87143c1cda4874ac35433f7c346147129
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector infrastructure, specifically `https://ttraff.com/pify?keyword=mr.+archer+hack+mod+apk`, which is flagged as malicious. The document also exhibits characteristics of an SEO link farm and a lure for a password-protected archive, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the ML classifier's high confidence score further support a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=mr.+archer+hack+mod+apk In PDF document text
    • http://denebozaz.deliveredphotos.com/uploads/1/3/1/0/131070786/gobajinigabeked.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/1/0431/2891/4074/files/64012690132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/graflex_crown_graphic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/imperative_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/kodi_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/bunotowipagosigefetijeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/pujaxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0855/6182/files/binary_search_tree_in_data_structure_using_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/kirudonelikevuwureba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2614/4670/files/lolivore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/rilobos.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 1

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_off000069cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 5204 bytes
SHA-256: e16679db23f304dcdad49bced1d465b25f683dc2d22024fad691163b43a88146
font_01_sfnt_off00007b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B63 9940 bytes
SHA-256: 98245540ba4b574fcaad0b96f8f7df945fdd1aa6665267bd42facd48a152b8be

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