Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec91de45e493448d…

MALICIOUS

PDF

35.4 KB Created: 2020-09-11 09:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fefd833e5a4e9209d0be62031a795b34 SHA-1: 7694afd63f30f8952b3e04bedef93897142fac4b SHA-256: ec91de45e493448db3b7b20f1a66868f0918d8246fec3fe8a8aec7a14ed0ce59
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, flagged as a 'PDF SEO Link Farm'. One of these links directs to a known malicious redirector. The document body contains garbled text but includes a URL that appears to be the primary lure. The presence of numerous external links suggests an attempt to manipulate search engine results or distribute further malicious content.

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.club/wix?keyword=acupuntura+auricular+chinesa
    • http://lemasekej.foxedenterprises.com/uploads/1/3/0/8/130874493/folokogasuzeruf.pdf
    • http://wimep.livingcanvasmedia.com/uploads/1/3/0/7/130774979/wuwixarafafivaga.pdf
    • http://files.comfortembroidery.com/uploads/1/3/0/8/130813427/2a53e595d9d05.pdf
    • http://dokubutap.rktttherapy.com/uploads/1/3/1/1/131164250/5769596.pdf
    • http://guvanojek.edujustices.org/uploads/1/3/2/6/132682565/05363b526e8.pdf
    • http://rujigode.south-union-shaker-village.square.site/uploads/1/3/0/7/130739090/lemoveje-ragejufigurit.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0319/files/annual_capex_budget_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/8446/3784/files/70110558360.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9584/files/mupuvumowuwunotanudogenu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6841/4370/files/dynamic_and_static_character_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/korelabolesuwiweliv.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/12_leons_pour_apprendre__dessiner.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/16136762666.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_off00004d43.bin
0080ed68d7801bbdb362b47ce2e5d02ce1ed8685a9022b00ea26e1698d8e090a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D43 5008 bytes
font_01_sfnt_off00005e41.bin
0b3a791c6bb829dc47508c147498ee5cf121f6eb8ad8dd40f363733531f34a4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 10272 bytes

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