Malicious PDF — malware analysis report

Static analysis result for SHA-256 155181f70c50749d…

MALICIOUS

PDF

53.4 KB Created: 2020-08-21 21:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e26f6fedd707c70df742fb6a64e952e7 SHA-1: 942071c52029d91910921e60625521cc4ffa5ff6 SHA-256: 155181f70c50749d92bbe140e6849ea8bdd631aaad64b9c8ca0275a716e0c757
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=kamoshidaman+boss+guide', suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=kamoshidaman+boss+guide In PDF document text
    • http://pulaned.tetasbeerblog.com/uploads/1/3/0/7/130775288/vetivajo.pdfIn PDF document text
    • http://temiri.tayloraugustine.com/uploads/1/3/1/4/131438025/a152d68689.pdfIn PDF document text
    • http://sigimupu.jfmusicproductions.com/uploads/1/3/2/6/132695492/6854677.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/1/0434/7848/3097/files/80848856323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4358/5191/files/buddha_amritwani_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/juvezaner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/89343894331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/77323955187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4016/9374/files/west_point_lake_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/gross_anatomy_of_lungs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/bugarorojow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/webomobituwisumepepaxifi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BD 3848 bytes
SHA-256: fa264372e13fd06e5984a0ed80200834c855b4c5e45c35a0fdde199566156423
font_01_sfnt_off00009373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9373 5220 bytes
SHA-256: eb6f0d96c300926fb6870e280adb4c5e903a394cd6654b43790b13ee970a5ae4
font_02_sfnt_off0000a516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA516 10420 bytes
SHA-256: c9dcb542f92ea5e671824bac7995d4b0482cb04b70a611944623200aa26c4c6f

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