Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e817f8312655cb7…

MALICIOUS

PDF

43.3 KB Authoring application: Smallpdf Desktop
MD5: ecc2a610e74e5d3b1ab626c28fe7d5ce SHA-1: 95df0b5da891130315aad4d8979c5c6798b158df SHA-256: 1e817f8312655cb717c63d8bcfa51bc24cbe41dc12da845e215c5dce15994939
152 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a machine learning classifier indicated a high probability of maliciousness. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with the primary domain being 'dontdate-her.com'. The document body contains text related to 'Cara video twitter iphone', suggesting a lure to click on the embedded links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://dontdate-her.com/uploads/1/3/0/3/130323164/9603037.pdf
    • http://colddiamnd.com/uploads/1/3/0/5/130590664/dbbce6895.pdf
    • https://kixujibij.weebly.com/uploads/1/3/0/3/130313453/makatebow-belovukevab-detawegipevira.pdf
    • http://mgracetransitions.com/uploads/1/3/0/5/130546574/2237839.pdf
    • http://chefsaba.ru/uploads/2020/01/28/tuxemot-xukixiwiwaba-sogudedojutewon-sejelovip.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/6/130604391/130604391.html#cara++video+twitter+iphone

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c3.bin
7dc5034b0e26457430a89d8b7bd1cbf2ba059fc10c5ebd41e88823fe0e7114f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3 8320 bytes
font_01_sfnt_off00006293.bin
41d817d7b0ce1a8ce4799e25a0d20d1d0fdf822befd36396d059466d372d2795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 16200 bytes

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