Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d58f8e97ea153a0…

MALICIOUS

PDF

39.2 KB Created: 2020-08-21 20:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa0b814b4df6a0c18ed9746062f6404d SHA-1: 3f8ca01bee2b79c96cf5a0f528a2b4a9cc04084e SHA-256: 0d58f8e97ea153a0461708d2eb48a5422515cd48043d0a89a5d595a9577f2fcd
162 Risk Score

Malware Insights

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

The PDF contains embedded URLs and text suggesting a fake invoice or payment lure, specifically mentioning a 'contract termination agreement template'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of the primary links leads to known malicious redirector infrastructure at ttraff.com. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of multiple external links, including one to a potentially malicious redirector, suggests an attempt to lead the user to a malicious site.

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.
  • 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.com/pify?keyword=contract+termination+agreement+template
    • http://temaj.akadeltaomegaomega.com/uploads/1/3/1/4/131438044/d8a46.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3453/3275/files/nopigobulu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/temipejapudebewoworuvifi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/how_to_create_a_successful_discord_server.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/gakajuwafu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/dafojusavaxulamapomorama.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/49135988096.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/44503710246.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5156/files/mikotulegulawutaxorexewu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7627/9702/files/nuzal.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_off00005c13.bin
f9763d2a947068d404f2836bfa8ca16b677b7ed4303292f8ae3982a1e4231554
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C13 4980 bytes
font_01_sfnt_off00006ce9.bin
f17edb5b6914e874ded13c736d381e4180a71fe2a09c22775d8a169f0298af2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE9 10348 bytes