Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da97562f49d8e4f…

MALICIOUS

PDF

107.4 KB Created: 2020-08-11 09:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50dbb9fea516503332e02af52051eac7 SHA-1: e2a24fd6ccc3ef678e941405b8b54de2d5ab08ab SHA-256: 9da97562f49d8e4f1cfa06ff0cf43ce83a5f1027142258046aed3660b2ea874f
120 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'philosophy logic pdf'. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt 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/pify?keyword=branches+of+philosophy+logic+pdf
    • http://files.shearserenitysalon.com/uploads/1/3/1/3/131383553/53b9878d6b0f11.pdf
    • http://files.ejpalmieri.com/uploads/1/3/2/6/132681556/jodakenotog.pdf
    • http://files.piersonbible.org/uploads/1/3/1/4/131406751/3649992.pdf
    • http://files.luxurylodge.fi/uploads/1/3/1/6/131636828/4439286.pdf
    • http://files.eyelightdesign.com.au/uploads/1/3/0/9/130969352/bekafajenujimama.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/11662583186.pdf
    • https://cdn.shopify.com/s/files/1/0434/6832/5029/files/44424758774.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/34595917296.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magej.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/7337530046.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/91607103012.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0437/8158/7095/files/tujozorajamu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2516/2652/files/afro_cuban_rhythms_for_drumset.pdf
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/sdgs_summary.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdf
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/48442949874.pdf
    • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/oregon_dmv_accident_report_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/5992/9503/files/rufaboxezu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001423a.bin
440455509a7a5430fdb90daad492a641e14c3fd359a42b7ccf601bccb33305cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x1423A 5276 bytes
font_01_sfnt_off0001541c.bin
8db8fe7ef24c6ababe0057068580724d9cda7944f83193c37df54948b0dbb116
pdf-font-stream PDF embedded font (sfnt) at offset 0x1541C 11972 bytes
font_02_sfnt_off00017bd3.bin
f8c08fa7eb806811f9ec4d76f9fb35514e9e92fc67938f13f30b7a842964811c
pdf-font-stream PDF embedded font (sfnt) at offset 0x17BD3 16196 bytes
font_03_sfnt_off00019115.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x19115 4324 bytes