Malicious PDF — malware analysis report

Static analysis result for SHA-256 261ebddb4d6811cb…

MALICIOUS

PDF

38.0 KB Created: 2020-08-17 02:06:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c95b8bfc1f68da17ded98f1a6b2e7e3 SHA-1: e990e44d1180fe1776f7435abb6525d3df1fcb76 SHA-256: 261ebddb4d6811cbd440f15210581c28e9c26aab5ce245a7d983c8961c1e3554
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'gastric sleeve recipes pdf' download. The document body and embedded links are part of a link farm strategy, with the primary malicious URL being https://ttraff.cc/pify?keyword=gastric+sleeve+recipes+pdf. This suggests a phishing or scam attempt to redirect users to potentially harmful content.

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.cc/pify?keyword=gastric+sleeve+recipes+pdf
    • http://files.westwoodpubliclibrary.org/uploads/1/3/1/4/131454883/0f15766ff1067.pdf
    • https://cdn.shopify.com/s/files/1/0435/3438/5303/files/pixelmon_soothe_bell.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/skyrim_se_bashed_patch_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/47761282564.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/93883019983.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/child_development_laura_berk_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/shadow_scale_terraria.pdf
    • https://cdn.shopify.com/s/files/1/0437/3941/4677/files/16695398092.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/fefanasuraz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/julanefiwozuxam.pdf
    • https://cdn.shopify.com/s/files/1/0446/5829/4937/files/captured_by_the_highlander.pdf
    • https://cdn.shopify.com/s/files/1/0432/6126/4035/files/zelda_encyclopedia_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/zagejipakokonupit.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/hwy_99_traffic_report.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_off00005840.bin
82565354b8a38139fb85ff8259c89dbef0d31bf8267db7e5bded91d2ae0b8b63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5840 5240 bytes
font_01_sfnt_off00006a2a.bin
8a7e62dcb017d63c8034e65bbc93f649bb3b425c8a6667485cda3baee28c285e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2A 9652 bytes

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