Malicious PDF — malware analysis report

Static analysis result for SHA-256 0067b669738b6fa1…

MALICIOUS

PDF

47.5 KB Created: 2020-08-23 22:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4d637bc22fa75f65e9e86d46f0527a2 SHA-1: 27bd1ba998b81f6f82cd4fd0a11e6166d3fe144d SHA-256: 0067b669738b6fa1533a2af8201799efccaa5f7c84cd89490b92105afbb823c7
222 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.ru, disguised as mortgage assistance forms. This pattern is consistent with phishing or malware delivery campaigns. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to obscure the final malicious destination and potentially leverage SEO for broader reach. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=wells+fargo+mortgage+assistance+forms In PDF document text
    • http://files.gvcabc.com/uploads/1/3/0/7/130775652/tenorageza_lewufixaxi.pdfIn PDF document text
    • http://files.playittodaygames.com/uploads/1/3/0/7/130776864/bovemuzikazimepijo.pdfIn PDF document text
    • http://files.digistitchcustomapparel.net/uploads/1/3/1/3/131398145/1790422.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/76590793878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/26377289788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/31598465372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/zitek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/jatakilegisoredowinivodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/43190140305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3710/6087/files/nikulakifenivejefuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1001/3853/files/korurokovaputegakibuxol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/types_of_adverbs_worksheets_for_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/40718099563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6708/8800/files/3152338715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/88929850351.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E18 5004 bytes
SHA-256: be8843bdddcfde46d703b44afa417cdb465751b6299d5ce3411feab4295e9662
font_01_sfnt_off00007f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F02 10320 bytes
SHA-256: 6de3180ea2228b167d46f6f2de5e5f19ef4c1b2985d9069865482069e33e4e14
font_02_sfnt_off0000a253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA253 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34