Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f1adb297ee3d49…

MALICIOUS

PDF

122.0 KB Created: 2020-08-09 01:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51372fd479f73d66cd8055015760e638 SHA-1: c06ac7dfa3ec0b8b1dfd9f084a499dfb94141c8b SHA-256: f0f1adb297ee3d4913e80bfcbfdf1f8890cdbe891185a1d4c9c6686346695c00
120 Risk Score

Malware Insights

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

The PDF contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches this finding. The PDF also contains a heuristic match for PDF_SEO_LINK_FARM, suggesting it's part of a larger scheme to generate traffic. The primary attack vector appears to be a lure related to 'antidepressant drugs pdf' leading to a redirector.

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.cc/pify?keyword=antidepressant+drugs+pdf
    • http://tazojila.sump2go.com/uploads/1/3/1/6/131607062/78645.pdf
    • http://files.hordlevoluntarycare.org/uploads/1/3/0/8/130874413/zoladamalija.pdf
    • http://tazog.amptheatreagency.co.uk/uploads/1/3/0/7/130776644/giboroninugixak-xafegipomami-fubutev.pdf
    • http://files.tabithajeanpage.com/uploads/1/3/0/7/130775309/jejabuw-jojajukodeg.pdf
    • http://files.greathorwoodhistory.org/uploads/1/3/2/6/132681728/2495463.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/befodexaweme.pdf
    • https://cdn.shopify.com/s/files/1/0440/2626/5765/files/55359606135.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/calculus_of_manifolds_spivak.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/26979949038.pdf
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/5976381548.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/68467849465.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/45577564298.pdf
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/lamofi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/sepsis_guidelines_idsa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8435/6509/files/rixibikor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3635/files/cub_cadet_lt1050.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/tamil_high_definition_songs.pdf
    • https://cdn.shopify.com/s/files/1/0434/4076/7132/files/77755089304.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_off0001a165.bin
1e6f684bbe678c10fa5c3c4eaf67104dd718b6ea97ad2672db463e67cd653567		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A165 5164 bytes
font_01_sfnt_off0001b30b.bin
0dcf265a46c6ba7c8315eb8dfb985468ee612f86427ff90053d23a98688bba7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B30B 11704 bytes

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