Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed0f4451d8b8d23…

MALICIOUS

PDF

39.8 KB Created: 2020-08-11 13:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 001a774544b5ecf5b024e227f732379e SHA-1: 2574f6dcf83ce186a3f0db34ad3a359924b8e4c0 SHA-256: 4ed0f4451d8b8d233932a013f188f1d85bfe45038b59c876ac0365e2b277ba7c
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at ttraff.com, which is further disguised by a lure related to 'athlean x workout pdf download free'. This suggests a phishing or scam attempt to redirect users to malicious content. No scripts were extracted from this sample.

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/pify?keyword=athlean+x+workout+pdf+download+free
    • http://vosunuj.michaelshusko.com/uploads/1/3/1/4/131407592/memopamotimekuxotubo.pdf
    • http://bonuzozat.diamondcb.com/uploads/1/3/1/4/131483281/5b6b00d15ed.pdf
    • http://renudimed.ingridblacypto.com/uploads/1/3/1/0/131070571/xuxep_pexukilurofupe_jurumesaxe_natus.pdf
    • http://wefav.nwbcknoxville.com/uploads/1/3/1/4/131483492/gamoxizabukewe_guruv_gilog.pdf
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/massey_ferguson_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/78573588680.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/gubosew.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/65690739146.pdf
    • https://cdn.shopify.com/s/files/1/0434/4594/4481/files/bim_360_docs.pdf
    • https://cdn.shopify.com/s/files/1/0430/5721/7693/files/perufise.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/38876460112.pdf
    • https://cdn.shopify.com/s/files/1/0434/0449/2965/files/duxajesupesebotaxazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9620/3679/files/autocad_inventor_2020_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/0096/9890/files/stomatitis_aftosa_rekuren_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/7094760549.pdf
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/55773105967.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f57.bin
5e9d39e5bc7c2429719a0d628ed7f7bf2c8e61261121371ce952d429b2ad9562
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F57 5000 bytes
font_01_sfnt_off00006061.bin
853e2fc6f94591492f573c387296c3a87b5777b160a12e623dc363649df367bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6061 10360 bytes
font_02_sfnt_off000083d8.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x83D8 4324 bytes