Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f29a119de7ff6e…

MALICIOUS

PDF

91.7 KB Created: 2020-09-04 18:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 261969a729e7c4d75b4dd65cd69d6490 SHA-1: 5719a6ab2ba0053d91549e89872fec18f7b44b03 SHA-256: 48f29a119de7ff6e7493285c83988dd35c10ffa166b395aace60a1a6808d08c4
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.me/wix?keyword=renaissance+periodization+powerlifting+hypertrophy+template', is likely the primary mechanism for delivering a malicious payload or directing the user to a phishing site. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=renaissance+periodization+powerlifting+hypertrophy+template
    • https://static.usrfiles.com/ugd/9e41f0_ee92f30d53874d90af7f4849853817ec.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_f4e54f351f9a49ea8a81c7600e55b18a.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d49e5c5caf9482085299ed73482cb7e.pdf
    • https://cdn.shopify.com/s/files/1/0433/2866/7816/files/vanellope_von_schweetz_hentai.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/20521033220.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/aha_guidelines_stemi_2013.pdf
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/99653284285.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/89381210851.pdf
    • https://cdn.shopify.com/s/files/1/0437/1798/4405/files/bokoxarupenamigufeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/1556/0616/files/79769830919.pdf
    • https://cdn.shopify.com/s/files/1/0454/7356/2790/files/binomische_formeln_anwenden.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_off000128a3.bin
8dbd9e477fd4fcad135e76c9678be530543bb60354953904e5c83890940b3b9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x128A3 5820 bytes
font_01_sfnt_off00013c72.bin
6f4fdae7d6b5cf0342e7360a4d58ac0c7ba768f79c97056cc7a4f00cfc218be8
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C72 10888 bytes