Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9deed8b4efa3b0f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-11 06:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78617367344481ff129ed60298de1619 SHA-1: 88f8544c148505701ef97d97844878c1ff9bb6f9 SHA-256: c9deed8b4efa3b0f826761c7915f87ce14f13159358e78b19f15d48dda15e9ad
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'lactic acid bacteria probiotic pdf' and the URL 'https://ttraff.com/pify?keyword=lactic+acid+bacteria+probiotic+pdf', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or engage in SEO abuse for traffic redirection.

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=lactic+acid+bacteria+probiotic+pdf
    • http://files.breadoflifehtog.org/uploads/1/3/2/7/132712050/fimiveramozuw_sudilibumumuz.pdf
    • http://files.eugeniojedimartinez.com/uploads/1/3/0/7/130776151/dedunomirozite_bodewesem_sinolorekesawab_sogozav.pdf
    • http://zasetuda.sayurihayakawa.com/uploads/1/3/0/8/130814328/9233839.pdf
    • http://files.feliciaaroney.com/uploads/1/3/1/4/131437636/7b4620c.pdf
    • http://derujanat.wmualphalambdadelta.org/uploads/1/3/1/1/131164250/nadimotelaxuvogigu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2374/files/74074617110.pdf
    • https://cdn.shopify.com/s/files/1/0444/7030/4935/files/delete_folder_on_github.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/xugifufobelejen.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/9337731806.pdf
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/10th_class_maths_notes_chapter_7.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/4957830781.pdf
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/bunny_kingdom_in_the_sky_rules.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/after_7_ready_or_not_live.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/wimuxakudiwo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/88509893772.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/47585190231.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_off00007631.bin
362cdb6e1fe0d6b6ffd6b8b95a34854c1da46dc74635cdb45573bcaf2f2c86c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7631 5020 bytes
font_01_sfnt_off00008748.bin
bbb0dce63a01fd1a26032e7aac8e073c84c058f01d4888eb0142b404cc6e0e41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8748 9572 bytes

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