Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea10cefa8ad16c89…

MALICIOUS

PDF

35.4 KB Created: 2020-08-02 12:02:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f778483de449c1495d368cfda8c1235 SHA-1: b9a14d7b623954c9d96401662486b680497c0e2f SHA-256: ea10cefa8ad16c895351619b1300234c3fe34534889ba2dce3943df7f0337266
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains references to the URL 'https://ttraff.com/pify?keyword=aisc+manual+14th+edition+pdf', suggesting a lure to download or view a document. The presence of numerous Shopify links, while some are benign, contributes to a link farm strategy. No scripts were extracted from this sample.

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=aisc+manual+14th+edition+pdf
    • http://files.newqha.org/uploads/1/3/1/6/131606546/7679ec2bce.pdf
    • http://files.adventuregirlsnj.com/uploads/1/3/1/6/131606248/jegadaxodekelotibav.pdf
    • http://files.acas.us/uploads/1/3/2/8/132815343/4688033.pdf
    • http://files.evansvillecathedralofpraise.com/uploads/1/3/1/3/131378897/3303613.pdf
    • https://cdn.shopify.com/s/files/1/0437/2925/6602/files/watch_iron_sky_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/60773602974.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/buvikamu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/tulaverebogozuzugitu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/12481668335.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/jiririjejarov.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/miwezekotagen.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/90768163338.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/taxefoxividofup.pdf
    • https://cdn.shopify.com/s/files/1/0432/2466/2173/files/kutozokewamugosa.pdf
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/minions_songs_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0437/3849/7185/files/40848756496.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/13752373482.pdf
    • https://cdn.shopify.com/s/files/1/0432/3432/8738/files/lutof.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/24588133355.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_off00004cee.bin
28efdf15f2c689a2cade13b4575c5ecfb5093b79a73b8f6f90adf91edc376391
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CEE 5428 bytes
font_01_sfnt_off00005f45.bin
217797bf3c2bd5bdd85df94197bd367a09d823224ee8b62f81ed3c7435d11142
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F45 9740 bytes