Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f010a4eb402e7a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 12:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 660689ebbef9a79115c8a357c64f9ebe SHA-1: f8ac739f52914de5a8126d80e66571aff4e1e3e1 SHA-256: a9f010a4eb402e7a12bc2e1dbe1f631185287d9f0e36589f423c4ab5f4b85774
120 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, specifically pointing to 'https://ttraff.ru/pify?keyword=bim+360+glue+launcher'. The document body, though heavily obfuscated, contains text fragments related to 'Bim 360 glue launcher', suggesting a social engineering lure. The presence of numerous embedded links, many pointing to Shopify domains hosting other PDFs, indicates a link farm strategy, likely to improve search engine ranking for malicious content. The primary attack vector appears to be directing users to the malicious redirector.

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=bim+360+glue+launcher
    • http://files.scfestival.org/uploads/1/3/1/4/131452878/vekotuwelefuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/10114528451.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/tawonudijudojot.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/74754322131.pdf
    • https://cdn.shopify.com/s/files/1/0434/1602/7303/files/pdf_annotator_crack_code.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/65616876317.pdf
    • https://cdn.shopify.com/s/files/1/0437/2588/1498/files/29672500904.pdf
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/illustrated_timeline_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/7778/0134/files/schindler_s_list_piano_violin.pdf
    • https://cdn.shopify.com/s/files/1/0433/8568/4124/files/24731137330.pdf
    • https://cdn.shopify.com/s/files/1/0435/2580/0087/files/ultratech_cement_manufacturing_process.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1194/files/77887950628.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/bevir.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0512/files/4614141279.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/bang_bang_audio_songs_naa_songs.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_off00005e91.bin
0bcbbd648ddd92bafa57b5536d91474844d5551a5fc587f181c57f110ed2fa57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E91 5544 bytes
font_01_sfnt_off00007132.bin
a553e5c0fbda3c00920ad8441e4aefcb8f555185d122e19eaf1c20ba2dc61b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 10564 bytes

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