Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6794912aac60399…

MALICIOUS

PDF

37.1 KB Created: 2020-08-01 19:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5eb2b9b237ff46e87bc6349f5f04382 SHA-1: 89375e98c74a45f4107c7e331c6428d246be5306 SHA-256: e6794912aac60399dbe016d879a0dde04d5423d0feb9c3ab1c054c6920488989
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=surf+conditions+atlantic+beach+nc'. The document body, though partially corrupted, contains similar URL patterns, suggesting a link farm or redirection scheme designed to lead users to malicious sites. No scripts were extracted from this sample.

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.com/pify?keyword=surf+conditions+atlantic+beach+nc
    • http://files.newlifetabernacleupc.com/uploads/1/3/1/8/131871963/tedevexapulevisabu.pdf
    • http://files.skyhikennel.com/uploads/1/3/0/7/130738632/givokuj.pdf
    • http://files.realjackoftrades.com/uploads/1/3/0/8/130874050/4800150.pdf
    • http://files.sinkorswimapparel.com/uploads/1/3/1/1/131164460/5493933.pdf
    • https://cdn.shopify.com/s/files/1/0433/1057/9865/files/dubulixoko.pdf
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/mujebiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.pdf
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/buxavolowuseseku.pdf
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/6173603380.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/28151231604.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/56132418380.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/gugagemomunud.pdf
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/python_list_append.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_off000053e8.bin
29436ed9520054b8202901de4dbea860d7eab04a8275b749588f692012a1b939
pdf-font-stream PDF embedded font (sfnt) at offset 0x53E8 5352 bytes
font_01_sfnt_off0000660d.bin
fb925ce2bacaee967ed20ed5bb3cb963263aa2e5aabadb63bcd0aca7436ecb46
pdf-font-stream PDF embedded font (sfnt) at offset 0x660D 10084 bytes