Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79b8e95ece2cf20…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 05:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9131058908b01e3d1fae18793f2982df SHA-1: 5023e277fdebaf20dfda72e96b9a5c0d14a60703 SHA-256: d79b8e95ece2cf20aca20ef60a83be09b41e8fc7c6c05e69b1f9047b54bee268
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though partially corrupted, contains text related to 'materi metabolisme protein pdf', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm strategy.

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=materi+metabolisme+protein+pdf
    • http://bezaron.theupperdeck.org/uploads/1/3/1/4/131408917/kopox.pdf
    • http://files.adamflath.com/uploads/1/3/0/7/130738974/7c5afcc3ca42.pdf
    • http://files.bergenphotography.net/uploads/1/3/1/6/131636965/zusasiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/11305338777.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/pafagafidom.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/fix_it_utilities.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/xeloxidut.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/63841753855.pdf
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/73565111808.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/blood_collection_tubes.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/mcdonalds_coupons_ontario_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/4282/4611/files/physical_chemistry_silbey.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/50115564050.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_off000064c1.bin
85cf2aac08edd810052cd218471abe9ef85f73e9fb5e15ed13b46cc2fb026893		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 5332 bytes
font_01_sfnt_off000076c3.bin
ac306963689f70a72c22a37196b8b8323fa209e8b5f65eee9696415a9fe34ead		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C3 10036 bytes

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