Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa01246ec4c10c6…

MALICIOUS

PDF

51.8 KB Created: 2020-08-28 13:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d19c0572154e8c1fbd0587b917347e1d SHA-1: c7364e22878af560d0aeb51614c9f589841d75ab SHA-256: 1aa01246ec4c10c6badf2d915cb39782d53d3df05bd87d48073df3f41352a91b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to deliver a secondary payload. The document body and embedded URLs suggest a lure related to a game download, aiming to trick users into clicking the malicious link. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=mlp+fighting+is+magic+download+android
    • http://files.tbicoach.com/uploads/1/3/1/6/131606227/a165a8c112.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/mimufiva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15501301831.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/77272088522.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/lazemisatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2771/8567/files/lizukoxanixibemuxubel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/78636638332.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4686/files/dragon_ball_xenoverse_2_best_qq_bang.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/wibisajepovuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3636/9318/files/language_arts_practice_worksheets_8th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0462/7244/6615/files/love_yourself_answer_concept_photos_l.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0101/files/88872254785.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/cervical_dystonia_botox.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_off00007f66.bin
8abb602e648cd908b1d069a0df645353e951af91925eb76a38a269e923a0f831
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F66 5336 bytes
font_01_sfnt_off00009163.bin
7e7e8a6930781f1cb11af60efe88082e9d41a0e5993c9bce7e9450b2652dca13
pdf-font-stream PDF embedded font (sfnt) at offset 0x9163 10216 bytes
font_02_sfnt_off0000b465.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xB465 4324 bytes