Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b874008b050ab13…

MALICIOUS

PDF

42.0 KB Created: 2020-08-05 08:37:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c312775e8f4ccb27acb74b80bcb5ad9a SHA-1: 63f41f24e3bb08276655dc0901b5603dc29a7abb SHA-256: 3b874008b050ab13e6985aa451c204a82ac9d81d229a3f84eee4f6a2f6aa9297
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is presented to the user as a job alert notification. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious URL is designed to lure users into clicking, likely leading to further malicious content or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=ap+grama+sachivalayam+notification+pdf+free+job+alert
    • http://files.myanalogworld.com/uploads/1/3/0/7/130774993/84ab239faf.pdf
    • http://files.susiphotography.com/uploads/1/3/0/9/130969939/5207696.pdf
    • http://files.northhaledontreeexperts.com/uploads/1/3/0/9/130969306/7268926e.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/viwef.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/biology_scientific_names.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/91691032862.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/59174662282.pdf
    • https://cdn.shopify.com/s/files/1/0448/5015/1584/files/google_sheets_save_as.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/18551217008.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/nabopuvuwikutoroj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8791/1319/files/vezerelodab.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/jiwowuxawotuzetanofud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31443612403.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/fedifuwej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8357326041.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/94765965261.pdf
    • http://www.freejobalert.com
    • 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_off00006275.bin
c5586538812957b80858307c61189e790d6d503a4940f6ddf01234e05b71d65c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6275 5936 bytes
font_01_sfnt_off0000769a.bin
9198604936bca03839343bf1fdc2a8acf07b51804ed94bf1ff0e9e68aae35c37
pdf-font-stream PDF embedded font (sfnt) at offset 0x769A 10656 bytes