Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b80166df07972f9…

MALICIOUS

PDF

66.1 KB Created: 2020-08-13 22:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec629680eb002ee68f1bc4885dcdb89c SHA-1: 2fd925b85317500a7bd0ecc6cfaa03609016e40f SHA-256: 8b80166df07972f9f467edf0d1e68e1012fb38be7a9e9cb083c77ff26a90a4fe
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a popular video song title. This indicates a phishing or malware delivery attempt. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation or to obscure the final malicious destination. No scripts were extracted, but the primary malicious indicator is the redirector link.

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.com/pify?keyword=baazigar+o+baazigar+video+song
    • http://files.stgilespreschool.org/uploads/1/3/2/7/132740515/kazorefo_kumobaku_dewowaw.pdf
    • http://witavik.diamondhomes.net/uploads/1/3/1/6/131637789/gavakopi-kapejore-pukux-muguxojadovilig.pdf
    • http://files.qualitylifeforum.net/uploads/1/3/0/7/130776646/gokizosudij.pdf
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/nojavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/24184395791.pdf
    • https://cdn.shopify.com/s/files/1/0434/6036/2392/files/81991725302.pdf
    • https://cdn.shopify.com/s/files/1/0431/4018/6268/files/incubus_love_hurts.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/kupupawig.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/antecedentes_de_la_contabilidad_de_costos.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/tadifaruninabinumirokin.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/conditional_converse_inverse_contrapositive_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/5838/8392/files/zetoxegotiwogadajowesu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/2959172384.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/77513468423.pdf
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/form_56_irs.pdf
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/80084430570.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/1190553937.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a546.bin
4b2d3f6b6f6a5a2837fba898866d1e0468a747a3bc08dcaf99bfcf23dde706ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA546 4968 bytes
font_01_sfnt_off0000b630.bin
aa32be2ddbe0549e79d6519bc668c9039c2bf3add3a83b28047c4635cb507bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB630 17780 bytes
font_02_sfnt_off0000ecb6.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECB6 4324 bytes

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