Malicious PDF — malware analysis report

Static analysis result for SHA-256 2231e3a2fd873fa3…

MALICIOUS

PDF

43.6 KB Created: 2020-08-08 05:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 502e01585208352d50cf8b4dc433256e SHA-1: ecfbf84875f94cce28f420be861347e60e3ca9b9 SHA-256: 2231e3a2fd873fa32e943a46fdf43ac47e1a66e8d19891917ab891ec93dca597
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily corrupted, contains the URL that triggered the malicious redirector heuristic, suggesting a lure related to 'canning food preservation'. No scripts were extracted from this sample.

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.cc/pify?keyword=canning+food+preservation+pdf
    • http://files.nykpart.com/uploads/1/3/0/7/130738534/jebafelom_resazoluzej_wobadadifewek_dejomilarafag.pdf
    • http://files.rccgwinnersassemblygp.org/uploads/1/3/2/8/132814306/5959120.pdf
    • http://files.txlpcsupervision.com/uploads/1/3/1/6/131606343/d5b1a17cfd264af.pdf
    • http://files.caterworldeventequipment.com/uploads/1/3/1/3/131381021/gasubajaxoduna-temujevimumumod.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/21029415318.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/decimal_places_python.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/xobulumiparupipofabakupil.pdf
    • https://cdn.shopify.com/s/files/1/0430/4125/9671/files/the_oxford_dictionary_of_english_etymology_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9891/files/adobe_scan_to.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/gosigal.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/so4_oxidation_number.pdf
    • https://cdn.shopify.com/s/files/1/0433/6988/9943/files/apspdcl_notification_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/your_love_brandon_heath.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6949/files/tabapadebilamivow.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/fimon.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/53369760936.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5045/files/betaina_trimetilglicina.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/98709467686.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_off00006cd8.bin
b68681a334a42fa571f800336f0400e7d1c0c89bdd0b3367ee182fec8c1a93f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD8 5140 bytes
font_01_sfnt_off00007e6d.bin
584f41b575dc1f97dd5e0f47a171ca9081b97c18c0462a7c4b112bb617066fa9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6D 10084 bytes