Malicious PDF — malware analysis report

Static analysis result for SHA-256 afebff4fe4c9654c…

MALICIOUS

PDF

48.7 KB Created: 2020-08-10 11:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65752024999d255d0f16f5c79d2e97ab SHA-1: 363e493096ac021113d79829328d423d58083a90 SHA-256: afebff4fe4c9654cede223b8577031c8dc5825ba6b60ffb23d83702dc41b629d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, https://ttraff.com/pify?keyword=casein+present+in+different+samples+of+milk+pdf, is identified as a known malicious redirector. This suggests the document is designed to lure users to malicious infrastructure through a deceptive link farm. No scripts were extracted, limiting the analysis of direct malicious actions.

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.com/pify?keyword=casein+present+in+different+samples+of+milk+pdf
    • http://files.kauffmanskeep.com/uploads/1/3/0/8/130814666/pomanidafavuka_jasadovatud.pdf
    • http://files.mobilegamedoctor.com/uploads/1/3/1/4/131437210/a262e89a5bf8d72.pdf
    • http://files.all4pawsdogrescue.com.au/uploads/1/3/1/4/131455883/9425829.pdf
    • http://files.123tkd.net/uploads/1/3/0/7/130775846/cb40413f.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/4369475807.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/lixekolobolofibijabiveb.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/grass_hog_weed_eaters.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/kifuxiju.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0122/files/fuzzy_logic_genetic_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/56055371534.pdf
    • https://cdn.shopify.com/s/files/1/0436/3059/2160/files/35712166360.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83300066175.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/2020_us_open_women_s_draw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/setapavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/naxenirasobu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/55170868102.pdf
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/gilerimajeduxikekigebume.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/48797467757.pdf
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/77300439799.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007753.bin
0a2e4d9274195423913154c8a7386442debaa5599bba726f837b993d3f048c68
pdf-font-stream PDF embedded font (sfnt) at offset 0x7753 1636 bytes
font_01_sfnt_off00007f81.bin
4a316017657cf09e490c2767bd746c461de4fbd86d116c1af3d21da6e779e18f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F81 5156 bytes
font_02_sfnt_off000090f5.bin
32d31c2387f524b929e877bb8eb090b5c9dc90b957004e1ddd7b34f1e003361d
pdf-font-stream PDF embedded font (sfnt) at offset 0x90F5 10668 bytes