Malicious PDF — malware analysis report

Static analysis result for SHA-256 2903824bc66b9655…

MALICIOUS

PDF

40.7 KB Created: 2020-09-16 17:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02f15393be3b2710b91f9c4bacc7d539 SHA-1: cb9edf0d3d7d6351d74d7e9aab5ec5c2849fe7cd SHA-256: 2903824bc66b96556aeaa12dc0d554511613a40cc7cf7e2a753048b02a0b238f
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'. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure for game-related content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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/wix?keyword=killer+worm+games+unblocked
    • http://natuto.the-blessedseed.com/uploads/1/3/1/4/131413418/zasotizizekalagiwe.pdf
    • http://files.reachbama.org/uploads/1/3/1/3/131383478/6534437.pdf
    • http://tumoneb.melanielynnen.com/uploads/1/3/1/8/131872269/dinidam.pdf
    • http://mabobib.newjerseywritingalliance.org/uploads/1/3/1/4/131410090/kutironidezat.pdf
    • http://bikudez.baycollisiontowing.com/uploads/1/3/0/7/130739140/mifamumawuwafej-kobafef-pesefosagofuk.pdf
    • http://files.allencblack.com/uploads/1/3/0/8/130874647/tifuvurafodosomajit.pdf
    • http://midage.lymeregisu3a.org/uploads/1/3/2/7/132741508/lizisaforefeloku.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/mivijopipaka.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/collections_in_java_by_durga_sir.pdf
    • https://cdn.shopify.com/s/files/1/0460/9707/2292/files/81980036766.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/vilisumem.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/netuxituxepu.pdf
    • https://cdn.shopify.com/s/files/1/0458/6163/4201/files/wesoguvetaxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/historia_del_escepticismo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/16703012373.pdf
    • https://cdn.shopify.com/s/files/1/0429/1375/9395/files/50713730387.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052b0.bin
4b2e1a2cac262efbe5ceae39431bd35d14ec04bc3560423b08bd36ff08cab3fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x52B0 5324 bytes
font_01_sfnt_off000064b3.bin
cbfe5ec7f68414f0cfa908f2324172e45d78ae3b20a21a7f9d1b70a27c31b80d
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B3 10220 bytes
font_02_sfnt_off000087af.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x87AF 4324 bytes