Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1ea1c13d7bd9ff…

MALICIOUS

PDF

54.9 KB Created: 2020-08-25 18:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d674206901e7f8039b1b329bf156ff3c SHA-1: 7b7ba1fbe1b6b367cbc800e47aa9ba9bec573bd7 SHA-256: 0d1ea1c13d7bd9ff47130bbd5ca2cf5463619eb7bbab92d0a23d26320e2e6f38
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm, suggesting a tactic to manipulate search engine results or distribute malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=la+metamorfosis+pdf
    • http://files.andrewjmason.co.uk/uploads/1/3/2/7/132710592/kukefota_rizagubix_vowag_murafuroveno.pdf
    • http://files.miltronicsinc.com/uploads/1/3/1/8/131856672/dixusam-vijuxuwexifo-tuboda.pdf
    • http://files.211yolocounty.com/uploads/1/3/1/4/131437722/1c56e.pdf
    • http://lajelubib.ilovebuttercups.com/uploads/1/3/1/8/131856257/dimititiviwonekuvi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/99358054419.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6520/files/coldplay_fix_you_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/durixakesivedovowud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9176/3105/files/22149637011.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/jutopuwitogawu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4680/files/52885421198.pdf
    • https://cdn.shopify.com/s/files/1/0463/0020/1117/files/zetafipowubokeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/0121/6163/files/kilobizusivute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/digalikerewuxajevukadud.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/forecast_worksheet_excel_2013.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/59143653662.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/firebase_notification_android_data.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_off000097ec.bin
fa5b1a22edb0d37421a97d4510c6054709c275efd056414be3660b760172bc7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97EC 5096 bytes
font_01_sfnt_off0000a928.bin
a72da0d2a2af71cb66d7fa036a22b042491ff8b2e7650f55bb0d1c5f7b643e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA928 10992 bytes

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