Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5fe6468673f686…

MALICIOUS

PDF

35.0 KB Created: 2020-09-19 10:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e94e5b02cb754b85f8114441ae234e8 SHA-1: 62ca31670649796325aefba2a61fefec765553da SHA-256: eb5fe6468673f686233efb96c6e80f3d7950cfa888777899f9a2eab03abf13d9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the malicious URL and several benign-looking PDF files hosted on Shopify, likely used to mask the malicious activity. The primary intent appears to be directing users to the malicious 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.club/wix?keyword=weed+eater+twist+n+edge+te475+manual
    • http://lotiguji.missnationalbeauty.com/uploads/1/3/2/6/132681300/9479848.pdf
    • http://gotinosan.valleycreekfarm.net/uploads/1/3/1/3/131383483/nelodizenokesepefame.pdf
    • http://nerubotit.butcherpapers.org/uploads/1/3/1/8/131856040/79414b428d850ed.pdf
    • http://files.uesosu.org/uploads/1/3/1/3/131380788/9698132.pdf
    • http://files.alex-vitale.info/uploads/1/3/1/8/131856949/lonatig.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/multiplying_fractions_worksheets_for_6th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/endocannabinoid_system_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/rejara.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/1636705010.pdf
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/ludaromafexu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4803/2673/files/ultrasound_guided_1st_cmc_joint_injection.pdf
    • https://b087b17b-675b-4e89-9248-2d0acd42f5f4.filesusr.com/ugd/d5cf39_ea8da1dc8bec4d15b0dd28dc440c6f53.pdf?index=true
    • https://18d48f7a-bc76-4a0d-9112-941ccdcea8bf.filesusr.com/ugd/b9801a_b8b0ab43f6b3439f9159fa43a0d551d3.pdf?index=true
    • https://ba1cba4e-a79d-4f2e-9ded-f618c588abbf.filesusr.com/ugd/f9d4cd_653da65c243248cd84c8f2e9566cfa66.pdf?index=true
    • https://1ffe05e8-1d54-4945-9857-f67696a22dec.filesusr.com/ugd/cb4a18_44c91e29039047d5b6b52c88c45af4cf.pdf?index=true
    • https://845ab344-ba87-4fab-932a-9930a063fbad.filesusr.com/ugd/374ce0_6db539a4302c466d8641e67c62fb0eba.pdf?index=true
    • 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_off00004a93.bin
31a63a361f46d0e464545daa65df2c204a93b51e13745032d931106d4356db84
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A93 5540 bytes
font_01_sfnt_off00005d83.bin
38ec8fa380d8963edde746fecfd300ba3edabc1cbace2c9fe15e4fd864d041a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D83 9816 bytes