Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc946da5680e2a23…

MALICIOUS

PDF

109.6 KB Created: 2020-08-19 04:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70cdc437b80c38e08fe047015cae98ec SHA-1: e2f6671f7b1f0eeb9998f6d582b05e8a58c1899e SHA-256: dc946da5680e2a23624d45ea2ce6ecb504dedb39cb276a8929b20aa924c07689
120 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and a link farm. The embedded URL points to a known malicious redirector, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the malicious URL.

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.ru/pify?keyword=advertising+media+planning+jack+scissors+pdf
    • http://files.nantymoelprimary.com/uploads/1/3/1/4/131454549/9718716.pdf
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdf
    • http://files.wallmanart.com/uploads/1/3/1/6/131607331/nidizojofiwigel.pdf
    • http://tabuzas.donthirejerks.com/uploads/1/3/0/7/130776167/kapof-duvuvu-nilobodisuvut-dovixopogel.pdf
    • https://cdn.shopify.com/s/files/1/0432/1011/3188/files/rerikuwezebudadepa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/attachment_styles_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/edgar_allan_poe_el_gato_negro.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/mabibuzim.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/namidujubenasamugepi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/85569429761.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdf
    • https://cdn.shopify.com/s/files/1/0432/5271/1582/files/jamodenuzejekemiri.pdf
    • https://cdn.shopify.com/s/files/1/0431/6636/7895/files/bleach_season_4_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/pituberizalebubujavidiro.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_off00016fd6.bin
2885a5b485bb810cb3cacb41d93f502f20d008103549ed85b77aac1dea737d64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FD6 5664 bytes
font_01_sfnt_off0001830f.bin
5b8ffc842f29b5c8debd2aff25c9965d979873e1262cc276a518957f612145bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1830F 11036 bytes

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