Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a599a3fb8566e1…

MALICIOUS

PDF

36.6 KB Created: 2020-09-17 01:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01a7d84e224e828527fb3714cd38d113 SHA-1: 65c05da608248ac8086f5f1783e0cf87eeef0d9a SHA-256: e4a599a3fb8566e19ea75eabb05dd392523a952c2d27e8b788cdfc48afea0512
150 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common tactic for distributing malware or leading users to phishing sites. The document body, though heavily obfuscated, contains the same lure text and URLs found in the heuristics, indicating a deliberate attempt to trick the user into clicking the malicious link. The presence of numerous PDF links further suggests a link farm intended to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/wix?keyword=glacier+bay+adjustable+curved+shower+rod+installation
    • http://zumomo.imbido.org/uploads/1/3/0/7/130775320/vusosopukojarijijur.pdf
    • http://files.freeshoestring.com/uploads/1/3/0/8/130814636/734372.pdf
    • http://files.jimmyvibert.com/uploads/1/3/1/6/131636654/padoj-tidutepa.pdf
    • http://files.laminatedturningblanks.com/uploads/1/3/1/3/131381109/dugawesawelezol.pdf
    • http://files.bestficoscore.com/uploads/1/3/0/7/130739227/5444896.pdf
    • http://files.deaconshope.org/uploads/1/3/2/7/132740375/selowono_xizupineka_rikewudenowubo_daxelat.pdf
    • http://feteziji.whimsicallightshows.com/uploads/1/3/1/3/131379846/92e14.pdf
    • http://files.aztardis.com/uploads/1/3/0/7/130776016/29bf223013422.pdf
    • http://files.tweetpraylau.com/uploads/1/3/2/7/132741045/dinivasijureg-lepamaf-bozufosebax-petisilujawu.pdf
    • http://nunazule.womensmarchroanoke.com/uploads/1/3/1/8/131872225/repiko-tiwelamamuxe-dufazasus-wapeko.pdf
    • http://xusepowub.vergelearning.com/uploads/1/3/1/8/131857580/c706072b4c0f.pdf
    • http://talefinij.sandiegobestpartyrentals.com/uploads/1/3/2/6/132695601/3c6d64b0752b7.pdf
    • https://cdn.shopify.com/s/files/1/0429/1805/1996/files/totaline_thermostat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/3094/3643/files/25026766948.pdf
    • https://cdn.shopify.com/s/files/1/0433/7218/3710/files/carol_of_the_bells_sheet_music_piano.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000468f.bin
ba6775dcce0f0a9b2ab85974611f0175f20b4e29bc27342da9bff6755706a06c
pdf-font-stream PDF embedded font (sfnt) at offset 0x468F 5528 bytes
font_01_sfnt_off0000596d.bin
224dfc1c4c166ba1dd370a93ff9e22fd9f28ee6fbbe7e759ed3b181a6ed8618c
pdf-font-stream PDF embedded font (sfnt) at offset 0x596D 2168 bytes
font_02_sfnt_off000062cb.bin
1909628e16703444046a72cd8ec74cbd0b6215f6012bf468fd2f05bcd9d0b118
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 9988 bytes