Malicious PDF — malware analysis report

Static analysis result for SHA-256 b65ffe23e09d8eb4…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 13:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d73cd23732872611f1850bd77d57f9fc SHA-1: 3528d83ac7d83c65217d3171d72b64d9f2fe0841 SHA-256: b65ffe23e09d8eb47ffb435990a7238b5ed5feee1d5df42bbd3a35dc14566fe5
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one pointing to a known malicious redirector infrastructure (ttraff.com). The document body, though heavily obfuscated, contains the string 'class dojo photos' and the malicious URL, suggesting a lure. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to malicious sites via embedded links.

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.com/pify?keyword=class+dojo++photos In PDF document text
    • http://files.helpsaveourhistory.com/uploads/1/3/0/7/130775231/xibomi.pdfIn PDF document text
    • http://files.frompapagod.com/uploads/1/3/0/7/130739369/kilurag_vukatuvixutadul_tufaposo_digag.pdfIn PDF document text
    • http://files.bikewritingbuilder.com/uploads/1/3/2/6/132695492/2716741.pdfIn PDF document text
    • http://files.laura-jamieson.com/uploads/1/3/1/6/131606453/4871767.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/1/0434/3247/6838/files/jorowaxukomenekerefunenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/33372032209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/59456153329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/paribugutilero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3962/5111/files/44872891409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/nitro_creator_pro_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1782/files/kuwimujebimudebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4986/8703/files/legilawikad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6611/1638/files/power_a_ps3_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nelafujadodejofit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0323/9840/files/heap_implementation_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/renokavebanisakuwifes.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 7

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_off00006a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A75 4932 bytes
SHA-256: 9f41381f9a07c3b637e108f57f6146ce684566ce17c74c2d3290857fb79e92e7
font_01_sfnt_off00007b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3A 10968 bytes
SHA-256: ad36bd75e7523dd305fe8a6db67e64296377cf6509ed37c14d34a314224907a6

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