Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f17a83bc1dfd6b…

MALICIOUS

PDF

44.9 KB Created: 2020-08-03 09:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88f3a6fd1ffa298c2c5bab7a8f4e7608 SHA-1: 753270846e6169e88b427093cdbdea9c2ddbbf35 SHA-256: 52f17a83bc1dfd6b334cbc06aa9f8dc9e3883205acb6db6100c6d5f1e62288cb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'install npm mac', suggesting a lure to trick users into clicking the malicious links. The presence of a link farm heuristic further supports the malicious intent of distributing links to potentially harmful content.

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=install+npm+mac In PDF document text
    • http://files.sobrightandbeautiful.net/uploads/1/3/1/6/131606003/weduse-wimagisevu-wimegemaj.pdfIn PDF document text
    • http://files.coldcomfortswhistler.com/uploads/1/3/1/6/131606687/755e77886309.pdfIn PDF document text
    • http://tagavo.aplusacademic.net/uploads/1/3/1/4/131408970/8420597.pdfIn PDF document text
    • http://files.bathbombspetersburg.com/uploads/1/3/1/0/131069886/143379.pdfIn PDF document text
    • http://files.syntheticgrassonline.com.au/uploads/1/3/1/1/131163898/f1978459a3ff.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/1/0431/9959/4656/files/zonuzobulopanitudojet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/53744288109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/69276499004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6679/9766/files/zalagiriponufakimuzuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/kekerovunifesufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9095/1848/files/the_pmp_exam_andy_crowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/36822014027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/what_is_reactivity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9045/2387/files/72310093920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/shining_stars_preschool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/polomozexe.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_off00006a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A87 4920 bytes
SHA-256: 5d197658f36d78c9ac2508c0ea73ff2aa2cc28166f3a2c5641fa372b94802f0b
font_01_sfnt_off00007b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B37 13840 bytes
SHA-256: 9cbbccc2d8fb2bfade7786ce444e2f9a00d8bc9d6030ab85409b4f8d0ab4c68f

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