Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7a7a58a4425efc…

MALICIOUS

PDF

44.6 KB Created: 2020-08-21 12:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0102d8da55eef55fda2c44ebdef20747 SHA-1: 0c9223e76b8bf50bb2f105efac1525450ff5eae9 SHA-256: 3e7a7a58a4425efcc513d9544e5e869191a271527dd390d775bcf172e3976c5d
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to a high number of embedded links, many of which point to redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bot+liker+app, which is likely used to funnel users to further malicious content. The presence of a large link farm suggests an attempt to game search engines or distribute malicious links broadly. No scripts were extracted from this sample, but the PDF structure itself is the delivery mechanism.

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.cc/pify?keyword=bot+liker+app
    • http://bigofipe.auscamfreedomproject.org/uploads/1/3/0/7/130739720/gotumabotesifu.pdf
    • http://sidodow.figsandfeathersfarm.com/uploads/1/3/1/4/131407995/9516883.pdf
    • http://files.rayouyang.org/uploads/1/3/1/3/131380341/22632af.pdf
    • http://files.thecharmerwpb.com/uploads/1/3/2/3/132302940/mozovafikimus_vabanibemoweso.pdf
    • http://files.trvea.org/uploads/1/3/2/8/132815367/8399883.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8881/files/a_league_tv_guide_for_tonight.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/viwolemam.pdf
    • https://cdn.shopify.com/s/files/1/0435/7983/4531/files/south_african_traditional_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0433/6120/6422/files/characteristics_of_africana_womanism.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/15768349902.pdf
    • https://cdn.shopify.com/s/files/1/0431/1420/1250/files/monsoon_theme_kitty_party_games_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/43517794342.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/50287885139.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/algebra_1_practice_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3642/5883/files/kigakenawawodewobam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/6466881430.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_off00005cb8.bin
0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB8 6744 bytes
font_01_sfnt_off00006d9f.bin
bf469a2caede41694b9403400f09defaf8a7ee3255c45ebe095d99bcd53bc89d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9F 4748 bytes
font_02_sfnt_off00007dd0.bin
96918767fe17be6dea8b4e2481fdd56bccb819d8c6b50793be6341539e611407
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 12892 bytes