Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac270bcbe10bccc…

MALICIOUS

PDF

57.7 KB Created: 2020-07-09 22:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 432300b18603f285c2c9eb87545c5550 SHA-1: 5dd9b1168217d2ceaee3d826783d8ae753c46959 SHA-256: 1ac270bcbe10bccc5a8f069b86eb4d45abef528293942c0fd5a0cc3a96f216a2
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with at least one identified as a malicious redirector. The document body itself is heavily obfuscated but contains references to the same URLs. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious sites.

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/wb?keyword=gospodarka%20magazynowa%20ksi%C4%85%C5%BCka%20pdf
    • http://files.starbags.org/uploads/1/3/2/6/132695883/vuzok.pdf
    • http://files.911bodyresq.com/uploads/1/3/0/7/130776118/natarudul-wasawebi-pifag-nisaneneduk.pdf
    • http://files.sailorstclaire.com/uploads/1/3/1/3/131382320/voxujadipupij_kuwenem_lirigisupusa_banewu.pdf
    • http://files.lifepsych.com/uploads/1/3/1/6/131636954/eca409daa.pdf
    • http://files.sweetbabiesdayhome.com/uploads/1/3/2/7/132740320/zipud_wenuv_soraminudej.pdf
    • http://files.leeshearman.com/uploads/1/3/1/3/131398605/d369cd84e68d8a.pdf
    • http://files.queensboyzexplorers.com/uploads/1/3/1/3/131378816/7350eb.pdf
    • http://files.wnyccda.org/uploads/1/3/2/6/132696155/6406825.pdf
    • https://jajafer.files.wordpress.com/2020/06/ronozogo.pdf
    • https://riwozuxel.files.wordpress.com/2020/06/84380016750.pdf
    • https://kipaxeguvew.files.wordpress.com/2020/07/fatiporavatejiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28664871254.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.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_off00009419.bin
f9076da6554eca70ec99e8dd0480c0b626f0d8552d82ff447c8fbdae05247fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9419 5596 bytes
font_01_sfnt_off0000a681.bin
3d9b95d27854c650800248213182c519a350bba33a756c107a5f3fdcfffb75c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA681 16736 bytes

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