Malicious PDF — malware analysis report

Static analysis result for SHA-256 10982d0a3106d462…

MALICIOUS

PDF

43.6 KB Created: 2020-08-12 03:38:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f00bf32f3c11bd2f421249c045bf8c54 SHA-1: a0b8c2c766dca6529b6670298486a811cbd2c604 SHA-256: 10982d0a3106d46289c9ba0d6e7a7bb13bd3909558afb0df33875960da12765c
162 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Access bars k uevo nyv pdf' and embeds a large number of external links, 30 of which point to Shopify domains, likely for SEO manipulation. One critical heuristic indicates the primary link redirects to known malicious infrastructure at 'ttraff.com'. While no scripts were extracted, the presence of a malicious redirector and the link farm strongly suggest an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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=access+bars+k%25C3%25B6nyv+pdf
    • http://files.ganglionsoftware.com/uploads/1/3/1/3/131380213/59760.pdf
    • http://wajixogi.icarustalent.com/uploads/1/3/1/8/131871721/8542985.pdf
    • http://files.entrepreneur-srilanka.com/uploads/1/3/0/8/130874284/zizabujivu.pdf
    • http://files.sydneyhasasister.com/uploads/1/3/1/4/131453054/nopipetaniviw-nozefibuseve-xafinisopup-potimavasemusul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/automapper_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/32083580384.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/mumudejimizigigorew.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2214/files/13999603787.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/80850906708.pdf
    • https://cdn.shopify.com/s/files/1/0439/5309/4811/files/regional_anesthesia_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7572/files/64408512585.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/ravofivepevufewaxibeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/69051348788.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/reduce_file_size_using_illustrator.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f17.bin
cf0165cbfd6b982a37e593165cdd959b939c8c6f1bc09557f3179102b3d99932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 5612 bytes
font_01_sfnt_off000071ee.bin
966106b28ae8f1330d826459814e5055f6d81c3513c9841a50410ef819790710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EE 1880 bytes
font_02_sfnt_off00007b05.bin
6e56beed2636a66efa7761cd1d37a7001a7e01d17591c5f926329b7835d19b3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B05 11032 bytes

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