Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1f39b59ef28e95…

MALICIOUS

PDF

38.5 KB Created: 2020-08-21 00:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b440f636026f7e91c531db1e6a98f7d1 SHA-1: 8cd8bfe0b19a6bab66c41e8a74355cde939632ac SHA-256: 5f1f39b59ef28e95f450ee4d42add757b01495849320b8c56dd674fb6bf26ea2
162 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially corrupted, includes a URL that is also present in the heuristics, suggesting a lure to external content. The presence of a large number of external PDF links, including one to a known malicious redirector, indicates an attempt to direct the user to potentially harmful content, likely for further exploitation or phishing.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=line+stickers++png In PDF document text
    • http://files.akamitzi.com/uploads/1/3/1/8/131857270/27d178fa00ec0.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/1/0434/0151/1068/files/juropivomepagoramaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8787/9580/files/68008196247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7138/files/41696486137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8675/3447/files/43401432507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/autismo_y_sindrome_de_asperger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8065/files/tovetok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/83970077785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8412/8151/files/notodula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/zakalozivakoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/delubavab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8311/2341/files/arabic_fonts_for_adobe_photoshop.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
🗂 Part of campaign: akamitzi.com 5 samples

Related samples 4

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_off00005af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF6 4864 bytes
SHA-256: d36daa4ecc5d035ebc6e9d90d2f21c05b16bc1d1859f97a294cba76050c71977
font_01_sfnt_off00006b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9E 10076 bytes
SHA-256: a7f6b4a476a62b06e880a1ef79d646b3d4e082193ddb612287465bd4458c888f

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