Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d500462676cb8a…

MALICIOUS

PDF

42.9 KB Created: 2020-07-12 20:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d4a858536b59c2cd93c754de85fdf61 SHA-1: 5bd0983b35dd653e66477f30d36af577ddefc427 SHA-256: a5d500462676cb8a9c722e36149f175269a53f820541c7bb770ad5da1dcab05d
152 Risk Score

Malware Insights

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

This PDF document functions as a link farm, embedding numerous URLs that point to external PDF files. One of the primary links, 'https://ttraff.ru/pify?keyword=fanuc+robot+tcp+programming+manual+pdf', is identified as a malicious redirector. The document's structure and the presence of a malicious redirector suggest an attempt to direct users to potentially harmful content under the guise of providing technical documentation.

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.ru/pify?keyword=fanuc+robot+tcp+programming+manual+pdf
    • http://files.shopverjus.com/uploads/1/3/0/7/130774979/1606711.pdf
    • http://files.aksimsurgical.co.uk/uploads/1/3/2/6/132682639/7268884ce3.pdf
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdf
    • http://files.alexjtaylor.com/uploads/1/3/1/8/131871618/1d922d79d92bf27.pdf
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/son
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/47751417195.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/wurakumivadodadupe.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/xejojanofunomeneged.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://pusetojax.files.wordpress.com/2020/06/vovukusezilovuxomimap.pdf
    • https://womitoguv321508366.files.wordpress.com/2020/06/dikok.pdf
    • https://bawegepagema.files.wordpress.com/2020/06/80015837749.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9204741539.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/xewomejegodaledeximomax.pdf
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/93335543873.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/popoliwudejebeludej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.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_off00006891.bin
63ff5c55aa321006ed2e95a6af5672b3e0b65af1ff043d3ccf455fd6607d73df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6891 5156 bytes
font_01_sfnt_off000079f2.bin
f5b91b0ef01d9842d7dd5f84fbc7236bc296e4ca87bacdf4ce240b03aba8c777		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F2 10552 bytes

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