Malicious PDF — malware analysis report

Static analysis result for SHA-256 06aaebb16e412173…

MALICIOUS

PDF

46.9 KB Created: 2020-08-07 03:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e6e5c888c048fefa72314e55198f721 SHA-1: 508d02718ba4781bbc49bb290d49c7f59903ce9a SHA-256: 06aaebb16e412173db9e85f06205405cf7f8b1b3f061cff90fd9a4b4d39e2170
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'cargo manifest PDF'. The presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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.ru/pify?keyword=cargo+manifest+pdf
    • http://feluromo.smallcapitaltrade.com/uploads/1/3/1/1/131164312/f02108e493b5.pdf
    • http://files.meaningsoftheheartart.com/uploads/1/3/1/3/131383924/4349611.pdf
    • http://files.janetreidmanphotography.co.uk/uploads/1/3/1/4/131409017/2181493.pdf
    • http://files.manukaessence.com/uploads/1/3/0/8/130814387/xovalo-nukam-kavodigu-fiwodumajog.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6081/2183/files/how_to_rename_a_column_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0437/4924/5079/files/combine_files_mac.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/87348617860.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/vovesojajalusu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/95545499976.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/fekogarux.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/49969568617.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/rpf_constable_ancillary_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/winoxilerudizixadejugo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/lagepirod.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/pivajajebupigajoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/zabuzupazusanev.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007888.bin
588b6053295004976e96ac75fbd8afe5b7f9aba908adac41865360b3b97018ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x7888 5232 bytes
font_01_sfnt_off00008a3f.bin
08a88eda892af171ab4bfabba3093ea1b0cb6f48de2bec588e7e3346c4dbc751
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3F 10900 bytes