Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec17d206c0158b1…

MALICIOUS

PDF

46.9 KB Created: 2020-08-28 04:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b484c11bc6a287095167afcfb5e7669c SHA-1: 57b70b145ebc6424d807bc85311243d506dd7fb8 SHA-256: 3ec17d206c0158b1afcf4a083c58152c171e632cf0554d410cfb53018dfb3410
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a lure promising information on how to hack 'clash of clans', which is a common social engineering tactic. It embeds multiple links, with the primary one leading to a known malicious redirector at 'ttraff.ru'. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent. No scripts were extracted, but the document's structure and embedded links are sufficient to determine its malicious purpose.

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.ru/pify?keyword=ways+to+hack+clash+of+clans
    • http://files.distribucionesfrilav.com/uploads/1/3/0/9/130969358/waruxikajefepuj.pdf
    • http://ritimaz.avaughn.org/uploads/1/3/1/6/131637814/646882.pdf
    • http://files.beasleydoodles.net/uploads/1/3/1/3/131382239/werofima_xeratubidasid.pdf
    • http://files.louatelier.com/uploads/1/3/0/9/130969465/kupinufaduti-guneb-nutelixijunuwu-lepuma.pdf
    • http://files.barbclawsondesigns.com/uploads/1/3/0/7/130775310/7326431.pdf
    • https://cdn.shopify.com/s/files/1/0432/8708/5220/files/padebenixoliwalepune.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/soniriwetojupaxaxulaforib.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/stay_a_little_longer_lyrics_download_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0449/9157/8276/files/scan_file_b_ngc.pdf
    • https://cdn.shopify.com/s/files/1/0437/0222/3013/files/flutterby_fairy_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/gallon_to_l.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/texawanugebexited.pdf
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/tumusitisimadobed.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1655/files/chicken_invaders_5_multiplayer_free.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_off00007120.bin
ab93d08b8963c87a8c5e61863438ed74aa78c3e76066a1843356343a99802d29
pdf-font-stream PDF embedded font (sfnt) at offset 0x7120 4676 bytes
font_01_sfnt_off00008105.bin
01e42e4c69f9b2ed21ab854cc1131224ff2b396bf93c550db78de11f139b6c86
pdf-font-stream PDF embedded font (sfnt) at offset 0x8105 9464 bytes
font_02_sfnt_off0000a0f8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F8 4324 bytes