Malicious PDF — malware analysis report

Static analysis result for SHA-256 2398433e70abfde7…

MALICIOUS

PDF

42.2 KB Created: 2020-09-18 10:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 263aa651e88c8a8c587415ac18a0750f SHA-1: f457c69225bde2303f37e0db400996ec80545044 SHA-256: 2398433e70abfde757f172170e7003e8c772d7d0933a4f537a4a7bb03a0e7f6e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.me, which is disguised as information related to adoption services. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL and the link farm structure suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.me/wix?keyword=open+adoption+and+family+services
    • http://fagumage.positiveperspectivesonaging.com/uploads/1/3/1/3/131381302/24cea1371.pdf
    • http://bedifuk.dawnhusted.com/uploads/1/3/0/7/130740086/fupoza.pdf
    • http://files.thehiveweddings.com/uploads/1/3/1/4/131453799/duwinedezuf.pdf
    • http://files.lincolnherring.com/uploads/1/3/1/3/131379706/2738395.pdf
    • http://files.4thdvpanecs.com/uploads/1/3/0/7/130739544/ebdaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/3474/5760/files/25044456175.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/widazuxejesemunevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/xirez.pdf
    • https://cdn.shopify.com/s/files/1/0437/5891/1649/files/kuxojizoxopezubomawumesu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3157/files/nuxomiviv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0293/files/jose_raul_capablanca_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/29942652074.pdf
    • https://cdn.shopify.com/s/files/1/0436/1001/3853/files/dowumawoxepelefekiwegiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2262/2621/files/best_way_to_annotate_on_ipad_pro.pdf
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/jidewaxubivejoxed.pdf
    • https://cdn.shopify.com/s/files/1/0451/6734/5818/files/7727079365.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/61695160092.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/actos_del_habla_locutivo_ilocutivo_y_perlocutivo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/vokeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/7694/4021/files/19380213601.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000659e.bin
d6971ee1982fc1519b7e7f1e28b7dd58ce5a67a85a2d23b1c79fad749dfbf7c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659E 5488 bytes
font_01_sfnt_off00007844.bin
f038977a8d8fca68fca241a3251f74378e4c69375eaaaa110c48d89ed58eb340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7844 10424 bytes

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