Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d0965effcf4d27…

MALICIOUS

PDF

53.8 KB Created: 2020-08-26 09:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1038fef6cf7c948edfc9a381e57bf07d SHA-1: 99305e7aea2aa8153bbcad3807c4810b04f3e06b SHA-256: 82d0965effcf4d279ce62ec00e240e11584841727049a8cfd4d029c19892ad3e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service identified as malicious. The primary malicious URL is https://ttraff.cc/pify?keyword=bot+weapons+and+equipment, which likely serves as a gateway to further malicious content or phishing pages. The ML classifier strongly indicated maliciousness, supporting the presence of these suspicious links.

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.cc/pify?keyword=bot+weapons+and+equipment
    • http://xatag.solutionsforenergy.co.uk/uploads/1/3/1/3/131398455/vewokowixogi.pdf
    • http://files.bbklr.org/uploads/1/3/2/7/132711966/mibisaniwosixu_dobogaj_vomupifuxuj.pdf
    • http://zutejuti.theridingtherapycenter.org/uploads/1/3/0/9/130969280/719d00f.pdf
    • http://dajef.durjavaoriginals.com/uploads/1/3/1/4/131406717/8802851.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/jawefafukemapal.pdf
    • https://cdn.shopify.com/s/files/1/0440/6083/6005/files/42472890520.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/50961669262.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/71103830801.pdf
    • https://cdn.shopify.com/s/files/1/0438/9657/0024/files/berliner_platz_1_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/73278426948.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/port_authority_bus_terminal_information.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/dumizepiratixixene.pdf
    • https://cdn.shopify.com/s/files/1/0430/8877/3269/files/nodedabivulatekezinurene.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3132/files/rofutupadoputer.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689a.bin
6b8f531304f2fdf5b9ac32006561f13d7bf547e10ad11918bf7cc01551958925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689A 3372 bytes
font_01_sfnt_off000074c0.bin
60199116a70f18b942b223a035dff8c25210bcc1917c0006f75869161c328e34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C0 5244 bytes
font_02_sfnt_off0000868f.bin
e5adc60f012fd9a9d06f36f97b4229caa1222099120502c9be3665f8e65e98d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x868F 14340 bytes
font_03_sfnt_off0000b467.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB467 16204 bytes

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