Malicious PDF — malware analysis report

Static analysis result for SHA-256 abdc8367cf68d010…

MALICIOUS

PDF

41.3 KB Created: 2020-08-21 21:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722ab653fc6b681ba33b83055bf90f30 SHA-1: f47b7c86e25e554eb0d0546becc329cf92c5f663 SHA-256: abdc8367cf68d0101a481f03f1a1415c8e7a9fb28bfac2989c268fb16399ed1d
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 a link farm hosted on Shopify. One critical heuristic firing indicates a PDF redirector link to 'ttraff.ru', which is known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to external content. The primary attack pattern involves tricking the user into clicking the malicious redirector link.

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=semi+formal+dress+code+ladies
    • http://files.cejdentalaccountants.co.uk/uploads/1/3/0/7/130775853/winuve.pdf
    • http://files.gardenincubator.org/uploads/1/3/1/4/131406735/3146367.pdf
    • http://files.guettner.org/uploads/1/3/0/9/130970012/e808d.pdf
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/final_fantasy_14_damage_meter.pdf
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/bsac_try_dive_medical_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23582012054.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4290/files/17902520529.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/kitakifegigiwerisedavexi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/pumopomazal.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/rozavinuludorilifegor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
    • https://cdn.shopify.com/s/files/1/0466/5842/0901/files/vowitejika.pdf
    • https://cdn.shopify.com/s/files/1/0431/1610/1798/files/aimsun_manual_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/tracing_abc_letters.pdf
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/84365379993.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_off00006365.bin
7248db2e071e4a27edf4071cb46fb354f3c9175d43f39ed08aeeaf3728c0a043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 5272 bytes
font_01_sfnt_off0000752e.bin
21fe905d5d91c987eea855434a98657b39073e97e4aff653cf5e213580fde4a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752E 10304 bytes

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