Malicious PDF — malware analysis report

Static analysis result for SHA-256 f928b408b1b77b61…

MALICIOUS

PDF

39.6 KB Created: 2020-08-31 09:32:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0dfca8a2a7542cf99b4175a06849886c SHA-1: 72c1903325b7926303ec52e6d1f72fd8b0ead1af SHA-256: f928b408b1b77b6197de9bf8c04bc5d221b26f1b7fd1b37facecd48c1cf8191f
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded links, one of which, https://ttraff.com/wix?keyword=clash+of+clans+ye%2525C5%25259Fil+ta%2525C5%25259F+hilesi+download, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Clash of Clans' cheats and download, aligning with a lure for potentially malicious content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm strategy, possibly to obscure the malicious redirector or to distribute further payloads. The heuristic 'SE_CALLBACK_LURE' also indicates a potential phishing or tech-support scam pretext.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=clash+of+clans+ye%2525C5%25259Fil+ta%2525C5%25259F+hilesi+download
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/83455253933.pdf
    • https://cdn.shopify.com/s/files/1/0437/6018/9594/files/escapists_crafting_guide_shovel.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/alcoholismo_causas_y_consecuencias.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/93152885008.pdf
    • https://static.usrfiles.com/ugd/b8c837_e35beff690f548fb955e51f8a2d41739.pdf
    • https://static.usrfiles.com/ugd/82e28d_dfeab7cd3e454c91a3875194b64a0ff4.pdf
    • https://static.usrfiles.com/ugd/3b47cb_afa3f746e26e48cf9875071e0073fa01.pdf
    • https://static.usrfiles.com/ugd/b8c837_6077fea1ecaa4c87afd75ccf61108b86.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9088138cb7a436a95f236995dde2dc6.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/british_empire_timeline.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/26282466646.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/dafomamapokaxamixoni.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/22444790907.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7887/files/iceland_tourist_attractions_map.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_off00005a30.bin
46ece667b9c18fa0cc5752e0ae0d48f68c36d488be599522155a1147bb78565c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A30 5360 bytes
font_01_sfnt_off00006bfd.bin
0585ca6d41a0147bee91f544b54f806648604c119e4a6e8506520e7d9d6a7896
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFD 10404 bytes