Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba098af3369c895…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 13:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 771b30b69dd74fcd04cb1ba84fa7a08d SHA-1: 64fc1c7b5ee7bc0f05c24e7a5c9e470f099e1cfc SHA-256: 7ba098af3369c8958422feadeca639ffd973ab056988f779b5a6eee437e6b498
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a school uniform shop and the malicious URL. The presence of numerous links, including a redirector, strongly suggests a phishing or scam attempt, likely aiming to redirect users to a compromised site for further exploitation or data theft.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
  • 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.com/pify?keyword=akeley+wood+school+uniform+shop
    • http://files.reikivibrations.net/uploads/1/3/1/8/131856877/xowuzaguku-ruvuw.pdf
    • http://zaxupoz.eddiespaghettiart.com/uploads/1/3/1/4/131437657/2941161.pdf
    • http://files.kpadgett.com/uploads/1/3/1/4/131483491/patelemu-nosoxuxumovupu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/52906043410.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/pijofiwele.pdf
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/24767190736.pdf
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/35100615446.pdf
    • https://cdn.shopify.com/s/files/1/0455/4902/7493/files/tubarolujaganusin.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/homelite_240_chainsaw_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5624/files/68705975436.pdf
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/magema.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/54506277042.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/viwenirilazuzo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006228.bin
2326b12f5d7295698d545e372f1a6376e99c24a5c1da536b38b29e78f9bddb95
pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 5432 bytes
font_01_sfnt_off0000748b.bin
725da57cc40fb0fe49069583b6df585fd3768c3423fc9673ca1c7f901c6d05c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 10364 bytes