Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4ebdd6fabc5060…

MALICIOUS

PDF

50.5 KB Created: 2020-08-07 23:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce060c28089d4d5c53791d4aeb1dd5d4 SHA-1: a29069e65c049656a42a182578e82f1013a34d7e SHA-256: 2b4ebdd6fabc5060183b1491e3999d9d5492184a16f0699bb418da020285cc52
214 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=partnership+accounts+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of many external PDF links, some benign and some unknown, indicates a link farm strategy, likely to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=partnership+accounts+pdf In PDF document text
    • http://files.diannoneill.com/uploads/1/3/2/7/132710671/8463979.pdfIn PDF document text
    • http://files.tinalaufter.com/uploads/1/3/0/7/130775398/ditobap-widefuxe-kotaruwatopidu.pdfIn PDF document text
    • http://files.daisyalexandriadesigns.com/uploads/1/3/0/7/130776640/lazijek-wewotaletoj-wixiniwepamep.pdfIn PDF document text
    • http://files.dreamcarmediaevents.com/uploads/1/3/1/4/131437949/183112.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/1/0428/9835/8432/files/12729031526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/wibiwus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/ladugeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/seguputizituzesujomurox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/61661183262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/31991685397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/jujowusopudidodozufininex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/4210245154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6150/1334/files/zakizejeliruwajufulozawis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3850/6146/files/the_microkinetics_of_heterogeneous_catalysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/gabutojazarawibesid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/florida_new_hire_reporting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1210/6912/files/synonyms_worksheets_for_grade_5.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FD 5212 bytes
SHA-256: f0f77d6c079eaac75f4be191e3e252087924eb20f6826fd2c8522c96cf2cfb03
font_01_sfnt_off000093b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B4 12964 bytes
SHA-256: cb7b124675c5137b6b0ec934ae1a693be59da7603d5f5e8dfde11f15b5e5d4de