Malicious PDF — malware analysis report

Static analysis result for SHA-256 e54d72fe43ba3533…

MALICIOUS

PDF

39.8 KB Created: 2020-08-20 12:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f691c9007d35d23e2b2c5ac43ffef4e5 SHA-1: 068d4f6798013f8bb415cfa2e82e382335f5cbaf SHA-256: e54d72fe43ba353340bbe27f0cf6ee9656f327916e30fd6be0d8db7d0a69c3d4
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. The document body and embedded URLs suggest a lure related to website templates. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=event+planning+website+template+wordpress
    • http://files.curtfonger.com/uploads/1/3/1/6/131606393/pibimogiderunelul.pdf
    • http://files.exclusivepraguetours.com/uploads/1/3/1/4/131453526/1205835.pdf
    • http://fanelipus.spclegacy.org/uploads/1/3/1/8/131871721/jafamavomemopaj_xuguvizureta_wusanafejomebap.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/4016144938.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/74632519335.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/alankar_ke_udaharan.pdf
    • https://cdn.shopify.com/s/files/1/0437/1592/0024/files/punusegowuroniru.pdf
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/41334302115.pdf
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/fabanulafivoxetar.pdf
    • https://cdn.shopify.com/s/files/1/0440/7109/2376/files/call_of_duty_zombies_ios.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42262915950.pdf
    • https://cdn.shopify.com/s/files/1/0428/1935/4791/files/litigem.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_off00005c51.bin
9aa94352f0fc40c3b1996d5dfe7eb9dad72d3a47ac538aa188f9b1f9c23e456b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C51 5528 bytes
font_01_sfnt_off00006f11.bin
535e8e7cac93f5ce8e39314fd56f11625ca0126a15b018511c7aa9f32cba70e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F11 10304 bytes

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