Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb97c2d4d704bb18…

MALICIOUS

PDF

55.2 KB Created: 2020-08-06 06:31:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a194126fc67005b03d60072208825520 SHA-1: 7b15e81fd66c351d489b1459f1880735b9c8aad3 SHA-256: fb97c2d4d704bb180fd813f1387b42091e3091550e7f9b2b9b1af061b348376e
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free PDF editing tool. The link, 'https://ttraff.com/pify?keyword=add+text+box+to+pdf+free', leads to a known malicious domain. The document also contains a large number of external PDF links, many hosted on Shopify, which is characteristic of a link farm. The ML classifier strongly supports the malicious nature of this PDF.

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=add+text+box+to+pdf+free
    • http://files.ieltsteetak.com/uploads/1/3/0/7/130776826/lefamolotu.pdf
    • http://naviw.sarahahenderson.com/uploads/1/3/0/7/130740049/9561569.pdf
    • http://files.tallsycamorecampground.com/uploads/1/3/0/7/130740213/zajafi-pakanawaluzotem-nikunija.pdf
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/77266525890.pdf
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/70684514383.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/dafaziwad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mupuxisupevijerabufogete.pdf
    • https://cdn.shopify.com/s/files/1/0440/3075/4966/files/85547666423.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/67012034280.pdf
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/zokopotisiloxez.pdf
    • https://cdn.shopify.com/s/files/1/0437/1247/9382/files/gefibevupudeminuwuzovetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/apache_score_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/97957091492.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/xorifebuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3511/files/77745630110.pdf
    • https://cdn.shopify.com/s/files/1/0436/7787/6377/files/40789349157.pdf
    • https://cdn.shopify.com/s/files/1/0433/8660/1635/files/78356418934.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_off00009d53.bin
91dc9cc01bf5a166ff1661e25795a75e2e6e5ca09b1fd598d3765f3d93457f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D53 4812 bytes
font_01_sfnt_off0000adc3.bin
246b2307ee03ebeea266670047e3e872312ad9392a83423bcd0c5960bae123e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADC3 10108 bytes

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