Malicious PDF — malware analysis report

Static analysis result for SHA-256 af31b2cc1d3b8032…

MALICIOUS

PDF

35.7 KB Created: 2020-08-03 11:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a64768c59d7f4ce64142cfa5c6f4ca3a SHA-1: 304e6379bb28da91aaaccf8ecfa3896a1a92ed8a SHA-256: af31b2cc1d3b80328d72210981493dac58a9442e7ddb244b6836fd5f69a57152
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at https://ttraff.com/wb?keyword=manual%20da%20impressora%20canon%20e481. The document body, though corrupted, appears to be a lure related to a printer manual. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended to distribute malicious content or improve SEO for malicious sites. No scripts were extracted from this sample.

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/wb?keyword=manual%20da%20impressora%20canon%20e481
    • http://files.koreanchurchofmemphis.org/uploads/1/3/1/4/131454106/vejirelap.pdf
    • http://didurujaw.7thbattalion13thartillery.com/uploads/1/3/0/9/130969472/4932661.pdf
    • http://files.darius-music.com/uploads/1/3/1/3/131398374/mifebefasiru-ligotuboxotok.pdf
    • http://files.meccadance.com/uploads/1/3/1/3/131379832/2313532.pdf
    • http://files.oldpueblosoapery.com/uploads/1/3/0/8/130813906/kumewajipimaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/pisonewexor.pdf
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/sukanosu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7245/2776/files/zawupetisuja.pdf
    • https://cdn.shopify.com/s/files/1/0437/9839/7085/files/57417162234.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/rexoletasezoloxilugex.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/genetics_from_genes_to_genomes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/65575123806.pdf
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/kanda_sasti_kavasam_lyrics_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/75681019526.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/zavarutenunimis.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/basopefaratotimilev.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/rename_file_unix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/borumu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6891/files/52388908900.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_off00004c8b.bin
ee19d1576a3f1f9d47ce1fd6dc24c11b5fb0dd008b663d4e1806675c92b6a3e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8B 5556 bytes
font_01_sfnt_off00005f6f.bin
5528b55e102be8afb43a2b3d53fe4ffd9bfb3dd6d2ddc16627097941ade99558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6F 10484 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.