Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b368627de3f84d0…

MALICIOUS

PDF

47.2 KB Created: 2020-08-18 23:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f132e8e874af005aa6100461fe21f7 SHA-1: e254997ea359401e4d4de2cda9dcbb5923c32547 SHA-256: 4b368627de3f84d0133ba6bc25864e23b7479bb80c9f39e2a433bcc8dc0de29e
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a TV guide, designed to trick users into clicking it. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO poisoning or to obscure the final malicious destination. The primary malicious URL identified is https://ttraff.cc/pify?keyword=xfinity+comcast+tv+guide+online.

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.cc/pify?keyword=xfinity+comcast+tv+guide+online
    • http://files.emilyrosenaturephoto.org/uploads/1/3/1/0/131069897/wogimad-polemal-lusozijavotepid-fawerasob.pdf
    • http://files.asharperimage.ca/uploads/1/3/0/7/130776393/950ac1e09.pdf
    • http://tonin.jessicaglazer.com/uploads/1/3/2/7/132740405/11bf6d2dc5.pdf
    • http://files.darlindoggies.com/uploads/1/3/1/4/131453206/a81e8d480eda4.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/fepesimonibusijij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/sazexetimenujawot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/zoxibiromu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9675/1774/files/15838162470.pdf
    • https://cdn.shopify.com/s/files/1/0431/9205/8005/files/black_s_law_dictionary_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/7947280433.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/98231649765.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/acura_radio_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/metoriwiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/6155/8944/files/21583521575.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.pdf
    • https://cdn.shopify.com/s/files/1/0448/4166/4669/files/pharmacology_of_anticoagulant_drugs.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_off00007921.bin
5854a0e29e199fc08140dbfa4eb6cc9707fde68e58c2006de11b895791fbe333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7921 5384 bytes
font_01_sfnt_off00008b68.bin
3ac90614a9a75f630d090494e0b28e866bf7b1e159162dec3c359aa1b7150a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B68 10560 bytes

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