Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39732dda78b811e…

MALICIOUS

PDF

50.2 KB Created: 2020-08-20 06:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b63a9093a00a2191092abf14e135621 SHA-1: e227feafe069563ac43ccf1557a40733ad1755ba SHA-256: b39732dda78b811e8971d4829b2e1bb76870037947352cf55d81a2207693d876
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure for a 'video player for Windows XP'. This indicates a phishing or social engineering attack. The PDF also exhibits characteristics of an SEO link farm, with numerous links to other PDFs hosted on platforms like Shopify, likely to improve search engine ranking and distribute malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirector link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=video+player+for+windows+xp In PDF document text
    • http://durur.scholarlyedits.com/uploads/1/3/2/8/132815176/4151769.pdfIn PDF document text
    • http://files.mbrilliantbody.com/uploads/1/3/0/7/130740624/5018101.pdfIn PDF document text
    • http://files.nicolebrauchart.com/uploads/1/3/2/7/132740580/39eb14.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/1/0432/8570/8953/files/jetin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/molecular_mechanism_of_cell_differentiation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/laporikasojege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/nulego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/vazukawotegegazanesib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7501/4566/files/dissection_carotide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/rikadazukezudamozigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/76049982193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/vudakajomazegadamekaz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D62 3068 bytes
SHA-256: 73557fd4b9a2faa9f31fa694fff4ee7b49963c6428b4887cd33583d0d4a3c7ed
font_01_sfnt_off00006827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 5264 bytes
SHA-256: d9a9f29764deae3398f035bf4fb2f3da50593658527fcbbe85ef679f4955e2f0
font_02_sfnt_off00007a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A30 2120 bytes
SHA-256: 0e048cbfb5b0e144552c809ac470df0b8331e5e115dd41b31fe30012324b565e
font_03_sfnt_off000083e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E6 10052 bytes
SHA-256: da86ab73247b174eb90d02d1ab23cf3342e8e9fc4c7fb89ccc076dd1f5350bd5
font_04_sfnt_off0000a685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA685 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f