Malicious PDF — malware analysis report

Static analysis result for SHA-256 3075021b5994f2b7…

MALICIOUS

PDF

41.1 KB Created: 2020-09-07 18:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a3151989808e1c19617b95a954d8e9fa SHA-1: 259d79a1dfb075bf72ceee3300793e1c9b61d2c8 SHA-256: 3075021b5994f2b767ccfaf6e2b77b886bf087bd7d459c057441843ced071d14
222 Risk Score

Malware Insights

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

The PDF contains a lure related to viewing credit reports, which is a common tactic for credential harvesting or phishing. It embeds a link to a known malicious redirector, 'https://ttraff.link/wix?keyword=view+equifax+credit+report+free', which is highly suspicious. The presence of numerous other PDF links, some pointing to benign content, suggests a link farm or a complex redirection scheme. 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.link/wix?keyword=view+equifax+credit+report+free In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/3e9e83_4384d1b393ae49c9b45233b6aceba6c0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bf57b5_00404d060ddd40079e9c60ea683b2f2b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/451461_d674bfdccf584f9ba8845935e4cd6056.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ed2ec2532ab9414db6307d41b171cbf8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3014/9270/files/spider_man_homecoming_coloring_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5923/3443/files/heat_transfer_yunus_cengel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7250/2425/files/movies_2013_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/biztalk_server_2010_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2504/7463/files/dnd_5e_artificer_revised_guide.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9a242c_5dd5748daf0d424fb0d3543ff632674a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/143c98_63cd157c997c41ffb0dc716795d169f7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b5472a_e58f01e43ed5443e9c491a7ee5b66ed4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b50c55_3190e1ed48584c9ebb7d699ea39e0989.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d1c05f_f19b8a300e304016b1b00372dc1de449.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eb4c03_de52d87cd3ca4866b31cf65aea3fc136.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d5415a_a5aadd8925004963b5c10ff4c0c7eafd.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_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 5188 bytes
SHA-256: ed0bfeab9091d0c193e73cbe8ae667e27405cbf22e931248e52d733728d31bbc
font_01_sfnt_off00007558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 10024 bytes
SHA-256: b4a6368d4bf468c14b80645f29dea3c9939ce635cfda25c6a3f491e2fe6c6ba8

Open this report in the interactive analyzer, or submit your own file for analysis.