Malicious PDF — malware analysis report

Static analysis result for SHA-256 8851945e8b2e91be…

MALICIOUS

PDF

51.9 KB Created: 2020-08-18 16:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ad20cea2cd701ac91c701afd6d4cb3a SHA-1: b9a3f20fd1de4dab3d65a5028060a9341aedaa38 SHA-256: 8851945e8b2e91beccd75ddb87024652818d6979df7635e4dd2aaadd2a4540d5
150 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=amman+hit+songs+tamil+free'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to this malicious site. The presence of a large number of external PDF links further supports a link-farming or redirection-based attack pattern.

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=amman+hit+songs+tamil+free
    • http://files.northernwhaleband.com/uploads/1/3/1/1/131163851/lafefodosi_morakakedepuj_bejabetug.pdf
    • http://files.ashlandcountytowninsurance.com/uploads/1/3/0/8/130873851/3588413.pdf
    • http://jupox.bamboolearners.com/uploads/1/3/0/7/130774978/f389c6deb8faa2.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/14475603436.pdf
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/jebamogavimab.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/codigo_de_capacitores_poliester.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/baraxoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/rolarib.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/escoffier_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/9653/9290/files/bellator_live_stream_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/zomakamemigadonuseromuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5057/3719/files/rororugab.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1985/files/muguzulutolabiser.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_off000087da.bin
abe19c91a25dfb19a09643389ed0d903207c201055e5bb9e16b84a97330de090		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87DA 5172 bytes
font_01_sfnt_off0000993d.bin
8e9ce39affe1d1a0367758b842c7f0bdb5f6e1292b716b62919aeeeeb0088c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x993D 13144 bytes

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