Malicious PDF — malware analysis report

Static analysis result for SHA-256 e546d4046d8b003c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-25 13:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 022c3dc8459acf758993f14f03daff3f SHA-1: e726c039abc11ebfe1b53a50a8f2706f1f341b58 SHA-256: e546d4046d8b003cd9895c255a71a0c5a01777c497285cbc34347123a272a0bb
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is disguised as 'bleacher report nfl draft rankings' to entice clicks. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=bleacher+report+nfl+draft+rankings
    • http://files.lovolutionofkindness.com/uploads/1/3/0/8/130815437/vuzelifizod.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/38001683343.pdf
    • https://cdn.shopify.com/s/files/1/0431/3556/5978/files/manual_para_aprender_frances.pdf
    • https://cdn.shopify.com/s/files/1/0436/9409/6539/files/figawijipevovo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/um_fernando_pessoa_agostinho_da_silva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4701/files/baazigar_movie_all_audio_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/43581541612.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/year_3_maths_assessment_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/android_games_hack_no_root_apk.pdf
    • https://cdn.shopify.com/s/files/1/0448/9432/2855/files/49377180581.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/41781437365.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_off000066c9.bin
6de7c4d5a8e975f1e77127a6fb96baeece6bb3cf7716038157e34ab3201edbad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C9 5528 bytes
font_01_sfnt_off0000798b.bin
8012f1cf12c3064fe03ac73d377c79a0a71ee02bebdffffcf33d4dfd258fe874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 10564 bytes

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