Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cd6c43b9ee3263…

MALICIOUS

PDF

51.2 KB Created: 2020-08-02 13:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e805d2986bebeed98c6dee7be556262 SHA-1: 02cba05adac3c96cca1ca56c10af6eab54a0b22b SHA-256: 20cd6c43b9ee3263668a9cf8849c0818d43188d752d5cbba51003db829829325
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=swg+crafting+macro'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL and mentions 'swg crafting macro', suggesting a lure. The primary attack pattern involves redirecting the user to a malicious site, likely for further exploitation or phishing.

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.ru/pify?keyword=swg+crafting+macro
    • http://files.theaterinthepark.net/uploads/1/3/1/8/131871501/8677951.pdf
    • http://files.cisairandheat.com/uploads/1/3/2/6/132682030/losowiboxajoti-wenojuzobubo-vuxur.pdf
    • http://files.rnnext.net/uploads/1/3/1/8/131857305/26d54ee40678db.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/foputafigigora.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/34360505160.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/lavekix.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/27343218572.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/69591944927.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/53880413544.pdf
    • https://cdn.shopify.com/s/files/1/0429/7129/9999/files/xevunozafadadebaxoku.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/33918924235.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/dopisewod.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/kowepaxovozemijifikobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/25157370085.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/99288171824.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/60588720698.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92399027362.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_off0000757a.bin
f088e60c4e09ca311d3c3e8dc48082896c8e531bdec9872f278a720d79854ff2
pdf-font-stream PDF embedded font (sfnt) at offset 0x757A 4856 bytes
font_01_sfnt_off000085e0.bin
691b2622be6420b2bbb74723e4bd514380f566a8f98bb144febe69a5d4400650
pdf-font-stream PDF embedded font (sfnt) at offset 0x85E0 13832 bytes
font_02_sfnt_off0000b1e1.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1E1 4324 bytes