Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac8b65ddecd3cbd8…

MALICIOUS

PDF

39.7 KB Created: 2020-08-19 14:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 971cdb8568d43d4ab2ba850f6acdc8d5 SHA-1: a3b853adad3694f70a5fd3bd6b3edfa5b3628ba1 SHA-256: ac8b65ddecd3cbd8a8c89f53c0e3ef8ee565cd187528730c953a25167ac6175c
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to a video and the redirector URL. The presence of a link farm heuristic further indicates an attempt to direct users to external, potentially malicious, content. No scripts were extracted, and the primary malicious activity appears to be link-based redirection.

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.ru/pify?keyword=video+cinta+luar+biasa+lirik+cover
    • http://files.808boogietcontest.com/uploads/1/3/0/8/130874254/5b9fa2a46f8451f.pdf
    • http://files.berksartalliance.com/uploads/1/3/0/8/130814605/butudebaradaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/femodipafize.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/tanukese.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/86107230432.pdf
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/detefetolugif.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/89489634561.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4199/files/pogukuwegikudemexuguzolu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9079/files/guborulaluribatupawupudug.pdf
    • https://cdn.shopify.com/s/files/1/0435/0646/6982/files/insubordination_write_up.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/market_leader_business_english_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/belt_conveyors_for_bulk_materials_cema.pdf
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/84025922831.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.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_off00005d1d.bin
d4c1949a92f2cfd0daefd46a6658a3ea2261d688e6cc0fd78f5085ef54cb1038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1D 5160 bytes
font_01_sfnt_off00006eb1.bin
8eb9e0e7c2cb07d607da60ebd1b64f91fdd148330f6d71f351915d69eb493c4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 10364 bytes

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