Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a84918232ba773f…

MALICIOUS

PDF

44.7 KB Created: 2020-08-18 13:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 657d60f1ef523142777c872a1122d6d4 SHA-1: 2abb3cfad825d5b55f719e25511a470dbd0d3aa5 SHA-256: 2a84918232ba773f0d3ac9a48fc0431f210d018dc60331bae5ab193f7a4817ee
214 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=unlock+experian+credit+report+online'. Additionally, it exhibits characteristics of a link farm, with numerous embedded links to PDF files hosted on Shopify. The document body, though partially corrupted, contains text related to unlocking credit reports and the malicious URL, reinforcing the phishing or scam lure. The presence of a callback phishing lure heuristic further supports the social engineering aspect.

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) 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.ru/pify?keyword=unlock+experian+credit+report+online In PDF document text
    • http://vufipezeg.livelifewelltherapy.com/uploads/1/3/0/8/130813765/330124.pdfIn PDF document text
    • http://files.sdesworks.org/uploads/1/3/0/7/130776218/duveludanisin.pdfIn PDF document text
    • http://roreka.womenofmiramichi.com/uploads/1/3/1/4/131407068/xirewewodomop.pdfIn PDF document text
    • http://files.markjago.net/uploads/1/3/0/7/130776183/1602856.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/1/0433/9384/3358/files/vavujutagitegajuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/kokoxatoziveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9785/0010/files/jeladefigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/30042839886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/42413274549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/8423/7224/files/96590141146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/balancing_redox_reactions_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/jivesuziwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/13590337447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/10684489584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0296/files/administrative_office_management_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9089/3213/files/nukimesemetuponebo.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_off00007306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7306 5012 bytes
SHA-256: 911bdafeafeb9cb5c03196afbfd62283b600fa537560c10fc5e629ff946fa3e8
font_01_sfnt_off0000841b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841B 9816 bytes
SHA-256: 108076b5af2b34715276132a14cfc9ebc3831d49804deb1ea416afa3caf06d8c