Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89a2ce40a9be6d0…

MALICIOUS

PDF

60.9 KB Created: 2020-08-31 01:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c1c93b8b326f62951325c6a86a1a701 SHA-1: fe1e4620cfdb94fcb6f9bc5998c9be2e5c898c98 SHA-256: c89a2ce40a9be6d0e6755caaaaff6f9d584d5fe7365a56bc9ac7689a50bdb1e5
152 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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/wix?keyword=naruto+jutsu+hand+signs
    • https://static.usrfiles.com/ugd/286fb8_b4658d1dc92644adb595908f02dc4f68.pdf
    • https://static.usrfiles.com/ugd/48f461_32ce87b4a4a54832b9ea1adb5b5c72ee.pdf
    • https://static.usrfiles.com/ugd/7dd30d_f24ce102f46e41218839f0f7d20e58fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_085437aa8ead483f82bd694a5c504171.pdf
    • https://static.usrfiles.com/ugd/b8c837_f86210dab46140d2aa205a30258b3991.pdf
    • https://static.usrfiles.com/ugd/2813e2_3c1f2a6e69ec4771b2d5e7a99c13eac9.pdf
    • https://static.usrfiles.com/ugd/09273f_68760e2c003c4120ae18428ddfec3288.pdf
    • https://static.usrfiles.com/ugd/ac51ce_e5fddd0675b2454695c2d3bad7f69eb2.pdf
    • https://static.usrfiles.com/ugd/a91264_76e176621ad446a2817e80e615dd465b.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/sta_travel_promo_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3979/files/73207255259.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/95730054969.pdf
    • https://cdn.shopify.com/s/files/1/0435/2979/7787/files/bisesebavalezogoveworu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4696/8218/files/4924408581.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ff8.bin
21d6dbd2214ee58e44bee0ae2ae1798b7ecf73caed0ab0fa306b3b00b48224f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF8 6504 bytes
font_01_sfnt_off0000a64f.bin
b40bf1b0ca9bc8ffc2adcdda667aa2d0e6c02d3560d21c20b7c93792e9368299		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA64F 5100 bytes
font_02_sfnt_off0000b7a5.bin
1226dca032947778f9776dc12df8ee49141cffbd18ef8388e22463d7bae8e4ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A5 10324 bytes
font_03_sfnt_off0000daec.bin
850b8800a02057d611c84ed85af37e17056d446cbb79cfdbee0d3408d463c40b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEC 2636 bytes

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