Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba756e2809eaa729…

MALICIOUS

PDF

42.9 KB Created: 2020-08-17 02:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9d8b7b45e2442761b50eb057bf43eb4 SHA-1: f3750757931001ee7c06bc3b262548f35227e189 SHA-256: ba756e2809eaa7293e5b8bc6c260827f6cff90263752ce0b10b79066cd7b4cd2
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com, but one critical link directs to a known malicious redirector. The document body, though partially corrupted, contains text related to a 'techstars convertible note term sheet' and a URL that appears to be a lure. The presence of a phone number lure in the heuristics further supports a phishing or scam pretext. The primary malicious URL is https://ttraff.cc/pify?keyword=techstars+convertible+note+term+sheet.

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.cc/pify?keyword=techstars+convertible+note+term+sheet In PDF document text
    • http://files.physicallyeducated.com/uploads/1/3/1/4/131454436/af4794d99eef23e.pdfIn PDF document text
    • http://files.theaterinthewoodsvt.org/uploads/1/3/0/8/130813546/simiwaxur.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/1/0428/8158/1209/files/dewalt_dw705_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/mubagaxovovakeparume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/icici_bank_business_loan_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6883/7288/files/vata_kapha_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/bodmas_questions_for_railway.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/tikadatimoritusesevaxoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6378/6137/files/dofawokadovawufedej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8898/6787/files/leduriz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/d_d_5e_character_sheet_download_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/71823148678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/causative_exercises_4_eso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4688/3748/files/cielo_lio_2_manual.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_off00006992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6992 5188 bytes
SHA-256: d5b75426505e712d5d744cb1c90ce48c087b0f3d9dc285a5275b954bbf7266d7
font_01_sfnt_off00007b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0A 10444 bytes
SHA-256: 67de2044ef1c3d19ce65c60c458677dfe7bda7d1e0eac6d94a67953816cd38a5