Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a14a28a7a3af59…

MALICIOUS

PDF

45.6 KB Created: 2020-07-31 23:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc6de365289b3e0c15c75a8b505bd8e1 SHA-1: 3daf72ad793756d70c8011240ad670fda8704a2c SHA-256: d8a14a28a7a3af59f01c56a36b7aa1e17b71171d7ea4c89a96872fd0f7e8dc5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body and heuristics suggest a lure for MFA or one-time code harvesting, likely to facilitate account takeover. The embedded links are designed to appear as a link farm, potentially to improve SEO or distribute the malicious payload across multiple benign-looking domains.

Heuristics 4

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=ffxiv+server+transfer+cost
    • http://files.christinajewels.com/uploads/1/3/2/7/132712451/196ffda13d827.pdf
    • http://files.joshuablubuhs.com/uploads/1/3/1/4/131437295/fakidizoxiguribajidi.pdf
    • http://files.raeganscreations.com/uploads/1/3/0/7/130775858/nezidepuf-tinodela.pdf
    • http://files.mycoachisabelle.com/uploads/1/3/2/3/132302892/a4afeb50.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6818/files/sadijegunezubijujil.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/65140008526.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/loxiwim.pdf
    • https://cdn.shopify.com/s/files/1/0430/2258/1923/files/risubazaxumusamogux.pdf
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/faa_8050-_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/3094/5685/files/47202491819.pdf
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/xiwakaxejofon.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/jubuvavag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2244/9814/files/lanetujaferowiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/witapenewoki.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2276/files/54144455062.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_off00007595.bin
8978dfa6d30c04248ffa0f5af6e442d3933daa2aa8f1066101d0a163c77d1578		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 4924 bytes
font_01_sfnt_off00008676.bin
93b9485642660bc10dc52855b0db8547e95a2baeddbb73da84efc5a2a1d633cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8676 10360 bytes

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