Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d05c7175b85b16…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 16:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5803f55244b381369045e85046c8dcb8 SHA-1: 3ed40b191557eeaadcf6bd6bae0e9143223dc3f9 SHA-256: 01d05c7175b85b1617c80d787dcb3aaa69807eacbd43a9559a95214d9b3e1819
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=impact+of+capital+expenditure+on+economic+growth+in+nigeria+pdf
    • http://files.jollygeographer.com/uploads/1/3/1/4/131482821/bobipototevekeve.pdf
    • http://files.cloverdalebarn.com/uploads/1/3/1/8/131857690/9c9792a4db.pdf
    • http://files.ahwatukeecommunitycenter.com/uploads/1/3/2/7/132740435/3108801.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/barbie_and_the_twelve_dancing_princesses.pdf
    • https://cdn.shopify.com/s/files/1/0436/0490/2045/files/45321149059.pdf
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/wagegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2616/9503/files/inspect_hack_for_robux.pdf
    • https://cdn.shopify.com/s/files/1/0432/7102/8896/files/27361065247.pdf
    • https://cdn.shopify.com/s/files/1/0436/8901/7497/files/amadeus_all_commands.pdf
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/snipping_tool_windows.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/autocad_commands.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/sararapikak.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/44185217589.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/77503160896.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/56521754831.pdf
    • https://doi.org/10.20448/journal.501/2016.3.1/501.1.113.121
    • 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_off00006651.bin
e19352dfddb720c436ff0714704aaf2a4bf1b46071692ef11d091b7d725e28d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6651 5488 bytes
font_01_sfnt_off000078d7.bin
644b5e14e4fa1ca91be8ba632cb5569afdbb1ad0d9b9d6a8d86d9b64f73c1102
pdf-font-stream PDF embedded font (sfnt) at offset 0x78D7 13148 bytes