Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c9e6e451f6b28d…

MALICIOUS

PDF

44.5 KB Created: 2020-08-25 14:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61ff24ee1f3fb10d84bd56c48d7e75d0 SHA-1: 61bc0c81bd68ad5f368f9eba8fbd791dc9d47a86 SHA-256: b2c9e6e451f6b28d83f6d847b8537db69307b4c76345c6dc3c0690a4838370fc
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=anti+adware+android+gratuit`. This URL is presented within the document body as a lure for a free anti-adware download. The PDF also contains a link farm heuristic, with numerous external links, many hosted on `cdn.shopify.com`. The primary malicious URL is the most critical IOC.

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.cc/pify?keyword=anti+adware+android+gratuit
    • http://zunopat.jenniferborkowskidesigns.com/uploads/1/3/0/7/130775166/c18e5453.pdf
    • http://files.drmrosenfeld.com/uploads/1/3/0/9/130969656/vefoxomekinawotu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/97804664965.pdf
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/dutaneperalunajukokuwaju.pdf
    • https://cdn.shopify.com/s/files/1/0454/4793/8206/files/sodipilavituvomobe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/10494238066.pdf
    • https://cdn.shopify.com/s/files/1/0436/1368/3874/files/peter_atkins_principios_de_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/tmux_start_session.pdf
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/jubajexizulet.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/wurivuvizipisorali.pdf
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/52248989535.pdf
    • https://cdn.shopify.com/s/files/1/0433/9774/2750/files/98835157502.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/56782670513.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/xizunutaruru.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/blouse_back_neck_design_images.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_off00006784.bin
3008eae12700774541b1cb68af1d5bea24167783da302c15622ecba6cd873364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6784 4864 bytes
font_01_sfnt_off00007828.bin
4a26cd405e8d042f622727147876ec2380413e1a1e741db66d696d0db6ad1b03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7828 15176 bytes

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