Malicious PDF — malware analysis report

Static analysis result for SHA-256 aead101f68fd75fe…

MALICIOUS

PDF

39.4 KB Created: 2020-08-02 11:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3f7ee6656a522a744c4e3a07b6e27b0 SHA-1: 091f26620be3d042749a8b3dfda496be413ada6b SHA-256: aead101f68fd75fed9a7d5b9c9f150e9d3372e35062df7b169c613fd4311f1ef
254 Risk Score

Malware Insights

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

The PDF contains a phone number '1800- 266- 2278' and is associated with heuristics indicating a callback lure and payment redirection. It also contains a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=1800-+266-+2278', and a large number of embedded links to PDFs hosted on Shopify, suggesting a link farm. The document body is heavily obfuscated but contains the phone number and URLs. The combination of these factors strongly suggests a social engineering attack aimed at defrauding the user.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=1800-+266-+2278 In PDF document text
    • http://files.collegedreamsconsulting.com/uploads/1/3/0/7/130776791/1494641.pdfIn PDF document text
    • http://files.cowgirlfaithbordercollies.com/uploads/1/3/0/7/130775310/xukeguzujada.pdfIn PDF document text
    • http://files.art35n.org/uploads/1/3/1/3/131398605/witakinejabuw.pdfIn PDF document text
    • http://files.prestonsburgchurch.org/uploads/1/3/1/3/131397940/6c72b807ff1c.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/1/0433/6369/6799/files/talotelip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dokole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/30c_to_fahrenheit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/19928340354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/64576009060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/13003661456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9847/0552/files/nenirulamalizerulowanugef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/pulad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/pumufaril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/96311043427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9562/files/68817401216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/84139179998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/mereme.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_off00005e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 4856 bytes
SHA-256: 01b9070994c50f2f23fbda18c8b096c8a4adb6ea81a6120a6a8a81440c93cdb2
font_01_sfnt_off00006eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 10060 bytes
SHA-256: 41d824c8a835b69bbd8eff71b4da2938f3535ab83f6bd95d5f3358f494df45a8