Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0dba1964fa9832d…

MALICIOUS

PDF

38.1 KB Created: 2020-08-19 02:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5bdc87023881f7fc2972142926d1b41 SHA-1: 9b2aee522b23adb1347be490542146ce50e123f3 SHA-256: a0dba1964fa9832d8be1a6e4302a99d57a00ed8431b3c512fbb53bee0cb6ceac
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous links, with one specifically pointing to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text related to 'Amped wireless sr300 setup guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning to attract unsuspecting users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=amped+wireless+sr300+setup+guide
    • http://mufako.rafiahdance.com/uploads/1/3/2/6/132681556/0ee6d3.pdf
    • http://zifexavom.beyondpinkaccessories.com/uploads/1/3/1/4/131453329/7588405.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/black_american_comedy_movies_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/72881391085.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/valobuvulepisiped.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/56428907971.pdf
    • https://cdn.shopify.com/s/files/1/0431/1089/1682/files/alexandria_library.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/vuvatekafex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/40170451732.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/quake_3_mac.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/iit_mathematics_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/14832833782.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3645/files/rosukoxuwilimasiditataf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/83938403364.pdf
    • https://cdn.shopify.com/s/files/1/0447/8153/5389/files/gazetted_officer_letterhead.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_off0000573d.bin
705f44d68c220b4ee3f102ab6b9530bcbb212c01a8906c248ddfbe9ce64027ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x573D 5456 bytes
font_01_sfnt_off000069ca.bin
323477dfcd973f6943194b1b9e16d2dfa1251de9f399ee02c47ff19c191cc26a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CA 9920 bytes

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