Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b7fafe04d88462…

MALICIOUS

PDF

50.7 KB Created: 2020-08-17 00:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41e182a7d5609a25770b5ad3202ea00c SHA-1: 76278938967cd35fe7501624c0830912c00212f8 SHA-256: d2b7fafe04d8846215a35af71c9ee9c0f7fac62ec3621da9c79244e24ebfed7c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=measure+blood+pressure+app+android'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains text related to 'measure blood pressure app android' and the malicious URL, suggesting a lure to a potentially harmful site.

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=measure+blood+pressure+app+android
    • http://files.thestitchingplace.com/uploads/1/3/1/3/131398332/6393806.pdf
    • http://guwozif.beautifullyuniqueinc.org/uploads/1/3/0/7/130740062/896432.pdf
    • http://files.gressartstudio.com/uploads/1/3/0/7/130739542/tevuxujazav.pdf
    • http://files.greenrootsgourmet.com/uploads/1/3/1/4/131453588/26d064099ed1a50.pdf
    • http://files.icanreferee.com/uploads/1/3/0/8/130874213/5f8ba046.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/zezekepepetud.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/72445541879.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/pokemon_leaf_green_gameshark_codes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4143/9400/files/71065464468.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/tabutabezelakekepasop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/convert_vmx_to_vhdx.pdf
    • https://cdn.shopify.com/s/files/1/0431/6794/0765/files/semefajovigukuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/3620/3415/files/palmistry_books_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/93443468613.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/bozezetemomemegedidonenig.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/nebumufadazixolojasanip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/osteoporosis_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/9077/1110/files/biochemistry_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/4334/6839/files/rilip.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_off0000722a.bin
1d4a38230fb05ca7cbb8f56fc6f4824670946d73abbf32d0765bfc15fcbc3ace
pdf-font-stream PDF embedded font (sfnt) at offset 0x722A 5096 bytes
font_01_sfnt_off0000837f.bin
b220e8341c6a9a49107208479ba4de129dac5d31037b20fab940e5a2844e114c
pdf-font-stream PDF embedded font (sfnt) at offset 0x837F 10684 bytes
font_02_sfnt_off0000a84a.bin
c507864d0aadc315dba4d342c7d7a7f310c5c701dcd85fab0ffb90b3504392a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xA84A 16060 bytes