Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c019d69a63215a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-31 18:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 836c102c30f438a2f5faa4b711c9349e SHA-1: b0a9195ab0febeb85e9f5707c8b79f167248f0c1 SHA-256: f5c019d69a63215aad3d11af5bef885bb0371b0e0306a7fccd6ab4a24a43115c
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL disguised as a search result for 'import whatsapp backup from android to iphone'. This suggests a social engineering tactic to trick users into clicking the link. The presence of numerous external PDF links further indicates an attempt to manipulate search engine rankings or distribute content through a link farm. No scripts were extracted, and the document body was heavily obfuscated, but the primary intent appears to be directing users to a malicious site via the ttraff.com URL.

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.com/wix?keyword=import+whatsapp+backup+from+android+to+iphone
    • https://static.usrfiles.com/ugd/1c90dc_5b581f9293a1444bb47763b4b3060ed6.pdf
    • https://static.usrfiles.com/ugd/71fd01_032664d43971462ebfdbf6ed9de8fd28.pdf
    • https://static.usrfiles.com/ugd/b8c837_a246bd3c8db64697a47402bef4858f06.pdf
    • https://static.usrfiles.com/ugd/b8c837_97f37fc9c1784e3aadce6cbab6f40feb.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bc6a4492a024c3e8a63f388d20d6214.pdf
    • https://static.usrfiles.com/ugd/63022f_85ac11757ee54e27862a6ecc666c2983.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5e2d96e8b664eca90f671195c5a7cb4.pdf
    • https://static.usrfiles.com/ugd/54fa57_aaef67abf70243a4ac4a6e641a4fd867.pdf
    • https://static.usrfiles.com/ugd/21e6f2_43a0825872e846d2a2c13bfaf3f7189b.pdf
    • https://cdn.shopify.com/s/files/1/0432/5559/5172/files/xeselokoboraban.pdf
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/betogojububezu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/oficce_home_and_student_2007.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/94641230435.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_off00006490.bin
96829b01c541fb954c570b1400356c08fafd616ce25cfb6b44a8513062e967ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6490 5596 bytes
font_01_sfnt_off00007774.bin
e1c42e204b205687e0598d7e5861ed83a895d65f16f5de3cf6d340e915a56bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7774 9964 bytes

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