Malicious PDF — malware analysis report

Static analysis result for SHA-256 88024bd816cf1061…

MALICIOUS

PDF

41.3 KB Created: 2020-08-31 03:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c0a570d55379c69ef16dbac986daa81 SHA-1: 4b15a462822ee1715443d2e4bdc982ec74a1b4d2 SHA-256: 88024bd816cf1061effbc8ca985bc0adc3fc178afcd0290fe79a435deb25f0e8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=every+landlord%2527s+tax+deduction+guide+15th+edition+pdf'. This URL is likely part of a phishing or scam campaign designed to trick users into downloading further malicious content. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector is the primary indicator of compromise.

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/wix?keyword=every+landlord%2527s+tax+deduction+guide+15th+edition+pdf
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/63296323920.pdf
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/apics_cpim_study_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/7531/9448/files/68895941815.pdf
    • https://cdn.shopify.com/s/files/1/0450/3057/2190/files/adobe_audition_full_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/vejogijus.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/online_action_movies_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/7287/1832/files/50002943033.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdf
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/rebogoro.pdf
    • https://cdn.shopify.com/s/files/1/0428/6735/9900/files/71266247294.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d928d30a28b4f8c87529791b03cfff4.pdf
    • https://static.usrfiles.com/ugd/a640e9_cfacdd8f0a6144b7bd9f1ea3ba1db888.pdf
    • https://static.usrfiles.com/ugd/b8c837_dad9782de13042d8bb5f05d20f83d07a.pdf
    • https://static.usrfiles.com/ugd/9b33c5_f9867e50b571466ebb1d540a8551a41e.pdf
    • https://static.usrfiles.com/ugd/96768c_3b22334204704b06a4e15a3122d7eca8.pdf
    • https://static.usrfiles.com/ugd/2c8d66_165bd039a8b146ada88fb70f23f980c7.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_off00005fdd.bin
6ce0b1cd70720c0bd445b63b2d7731ddce2acdb0244cf3fb65d305ba721e4dc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDD 5816 bytes
font_01_sfnt_off000073c9.bin
41cfb168333854cb9edcbea69a98d8556993cd545a6df3c442dcc4450f192424
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 10524 bytes