Malicious PDF — malware analysis report

Static analysis result for SHA-256 800b0963c26898d1…

MALICIOUS

PDF

36.9 KB Created: 2020-08-29 20:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31a4d27d3bec378672edb0dc59920bfd SHA-1: fa3f341c79acf2cb9c1781bcff84f785e01fe317 SHA-256: 800b0963c26898d12dfbe92f2d0c206d304b2cd1861a3eb672516dd2f4f33963
152 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.club' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Minecraft 0.15.0 apk download free', suggesting a lure for users seeking game downloads. The presence of numerous links to 'static.usrfiles.com' and 'cdn.shopify.com' indicates a link farm, likely used to distribute the malicious payload or mask the true destination.

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.club/wix?keyword=minecraft+0.+15.+0+apk+download+free
    • https://static.usrfiles.com/ugd/b77b08_a4d24d81bc53484db94675ceba1f4bda.pdf
    • https://static.usrfiles.com/ugd/b8c837_aed35aa1fc134d989308ae735df3f3d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffda8f7cd92a40f38722fdf2945ddf2a.pdf
    • https://static.usrfiles.com/ugd/b77b08_3af588110aab4c2aa3f737f7c80e7c6b.pdf
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/23279704645.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/incredible_5_point_scale.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/ponanumuvujarerox.pdf
    • https://static.usrfiles.com/ugd/f515ca_f7441a60bd434a82b93097c5c1315475.pdf
    • https://static.usrfiles.com/ugd/b8c837_311f7dd521204dd58dfe8bf5f63acd8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a465c763f46f43d2b5f850c8ef7f4c17.pdf
    • https://static.usrfiles.com/ugd/b8c837_1bbad9c8a3194167a5ba6c559356eb84.pdf
    • https://cdn.shopify.com/s/files/1/0434/3503/2737/files/wakadedorubixedosokibow.pdf
    • https://cdn.shopify.com/s/files/1/0437/0736/7592/files/effects_of_overpopulation_on_environment.pdf
    • https://cdn.shopify.com/s/files/1/0440/1538/6789/files/manual_camtasia_studio_8_en_espaol.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_off000052a2.bin
7a375bf61b260e00ec736c29c69377c591171c47bea4c39c3a3aff85dc3f1824
pdf-font-stream PDF embedded font (sfnt) at offset 0x52A2 5480 bytes
font_01_sfnt_off0000657a.bin
d0135cfd1c963c418a52941e37f06d95000f955061319576a80de079261b476f
pdf-font-stream PDF embedded font (sfnt) at offset 0x657A 9752 bytes