Malicious PDF — malware analysis report

Static analysis result for SHA-256 90fed6e265c68523…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 18:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 052c138feba50ce5129556acf518445c SHA-1: 43af4618dd3f22d7dc929124e957dd1986f4b56a SHA-256: 90fed6e265c685236c6b159d3ca55b07dbf1cc0ff420f0966242c82e596184fd
128 Risk Score

Malware Insights

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

The PDF file contains a link to a malicious redirector disguised as a search result for exam papers. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the ttraff.com URL. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely to improve search engine ranking for malicious content. The presence of a download button lure further supports a phishing or scam attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=ibps%20clerk%20exam%20papers%20with%20answers%20pdf%20free%20download
    • http://kesiwiv.collegeboundmonterey.com/uploads/1/3/2/6/132682883/9a5364472768.pdf
    • http://komifub.boomerbones.com/uploads/1/3/2/7/132740405/7cc50210e9.pdf
    • http://venakim.two-suitcases.com/uploads/1/3/1/0/131070487/713517.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdf
    • https://cdn.shopify.com/s/files/1/0440/8459/2805/files/round_function_in_oracle.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/dotitefaxopurodasepux.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/sobunuwufufafanip.pdf
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/amazon_fba_course_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/bogonuneterinop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/faviwa.pdf
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/monidugajaraziji.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/twitch_followage_command.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/tezekate.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/compareto_method_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/5439895486.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/93706696509.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/wegulivogek.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/laboz.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/
    • https://cdn.shopify.com/s/files/1/0429/5265/500

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628c.bin
2560e7191f0e8814a948a22c9bdd0e10e9e7940a0f975167b0dfd5a4860cdc06
pdf-font-stream PDF embedded font (sfnt) at offset 0x628C 5696 bytes
font_01_sfnt_off000075ce.bin
8f2177cd2c9a93a96b1a076627e0b8e06030774cf5c140b1cc3dbacf755bab75
pdf-font-stream PDF embedded font (sfnt) at offset 0x75CE 10504 bytes