Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e3d079b68c0ce6…

MALICIOUS

PDF

45.2 KB Created: 2020-09-18 05:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 816aab3255c6feac4c48431e6bbd8a41 SHA-1: 3d376e56e32666400d8f7696364f4c51ac4c161d SHA-256: f6e3d079b68c0ce69939b3a514b104b2f4237feed579bcb47eda3ecb24647be4
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.me, which is disguised with a keyword related to product manuals. This suggests a social engineering tactic to lure users to malicious content. The file also contains a large number of links to external PDFs hosted on Shopify, indicating a link farm or SEO poisoning attempt. The primary malicious IOC is the redirector 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.me/wix?keyword=ryobi+electric+pressure+washer+manual
    • http://files.mydetecting.com/uploads/1/3/0/7/130776218/ce4d8da.pdf
    • http://bajakesum.lex-sing.org/uploads/1/3/1/8/131857631/ab8056d1c85f.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/besame_mucho_partitura_piano.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2678/files/mifudikaxeginukigodotejid.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4903/files/topupidixiseletomofaxozuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/zunubajidenilimalazaroz.pdf
    • https://cdn.shopify.com/s/files/1/0464/9487/5800/files/falusutalodezenomatuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5633/9861/files/xaruparupev.pdf
    • https://cdn.shopify.com/s/files/1/0432/3151/0690/files/91428297689.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/chaar_sahibzaade_movie_filmyhit.pdf
    • https://cdn.shopify.com/s/files/1/0462/7346/2434/files/closing_balance_sheet_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/viberakosegizarov.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5941/files/biblia_de_estudio_para_la_familia.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/minecraft_football_skins.pdf
    • https://cdn.shopify.com/s/files/1/0433/9918/4551/files/fball_f44_data_sheet.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_off0000722d.bin
1d5c60a9c4805de45c6d690dd748fdb438094f83247e1adb3b1ca3faf779cd4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722D 5512 bytes
font_01_sfnt_off000084dd.bin
9cc9df319a5bfaaaf39557c9791e9f53ca49003424e1fb286f61f1a9fe92682f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DD 10268 bytes

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