Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e836a917dda90f1…

MALICIOUS

PDF

38.1 KB Created: 2020-08-24 17:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76cd13715607a49e1c159763a1b029dc SHA-1: 6739896b29a4b3e0f85e2f521af24fb6ac9fab6e SHA-256: 4e836a917dda90f1fbf3c2129b92254b78dea8826b878aea97ea242c5862fbfb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems

The PDF contains a large number of embedded links, many of which point to a link farm hosted on `ttraff.ru`. This infrastructure is known to redirect to malicious content. The document body itself is heavily obfuscated but contains the primary redirect URL. The presence of a link farm and a malicious redirector strongly suggests a phishing or malware distribution attempt.

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=leading+questions+and+the+eyewitness+report+prezi
    • http://xozigopi.cosmicbirding.com/uploads/1/3/1/6/131606289/7236870.pdf
    • http://files.randiandmike.com/uploads/1/3/2/6/132695472/felumozu_nanibugufe_fipojozar_vunibubikowek.pdf
    • http://jezul.ballywalterpci.org/uploads/1/3/1/0/131070702/6c87b0.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/game_design_theory_and_practice_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/1780/4708/files/zanezamafanobumirati.pdf
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/56862489838.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/section_15_of_cgst_act_2017.pdf
    • https://cdn.shopify.com/s/files/1/0461/0765/6355/files/avast_antivirus_2018_crack.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/nedalewonepa.pdf
    • https://cdn.shopify.com/s/files/1/0452/7433/3346/files/end_punctuation_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/cell_and_their_organelles_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/0107/7142/files/86144738409.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_off000056b4.bin
beee0bf6b4ec56085449f03f7a8e1a5264a54c577bc753481a3b274d68ed7757		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B4 5500 bytes
font_01_sfnt_off0000697b.bin
2244f8c48679db370539b34e1c487280b5904775af27d1ab23f9acc5cb4c8be2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697B 10012 bytes

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