Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef56e08d6a9369e…

MALICIOUS

PDF

55.1 KB Created: 2020-08-28 11:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1457021f4e66d0987044ff91bb495fa2 SHA-1: 7e50f56295e517ecba1daf4c3790aa1a1f113937 SHA-256: 9ef56e08d6a9369eb65c56f352dcd788844c5dd8ccad706caff5adb918f1883b
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector. The document body text, though partially corrupted, includes keywords related to "MSP hack" and a URL that appears to be part of a link farm designed for SEO manipulation. The primary malicious link is https://ttraff.ru/pify?keyword=msp+hack+no+human+verification+or+survey+or+download+2018, which is likely intended to lead the user to a phishing or malware distribution site. No scripts were extracted from this sample.

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.ru/pify?keyword=msp+hack+no+human+verification+or+survey+or+download+2018
    • http://files.dancelikeacupcake.com/uploads/1/3/0/7/130776485/wusaduwozuxed.pdf
    • http://files.homeecathome.com/uploads/1/3/1/3/131380754/b96c97ae75246.pdf
    • http://files.roxannesmith.ca/uploads/1/3/2/7/132740925/niberumomufezejipu.pdf
    • http://files.didierarchitecture.com/uploads/1/3/1/8/131856769/gojivi-xuluzewututuzat-wimiwinenajek.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/xanez.pdf
    • https://cdn.shopify.com/s/files/1/0437/9954/3970/files/vous_serez_le_premier_inform_en_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/pibokipegixabetepakemepab.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/nosokenaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/katoril.pdf
    • https://cdn.shopify.com/s/files/1/0434/1619/1125/files/36930899895.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/paninaditizerebos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/88071104750.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/6712116739.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/kuwufi.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_off0000807c.bin
c4773c5c7e6b467752f095f0cd63e1e3ccda8a6bd2f5efc23622e67a66a85912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x807C 6240 bytes
font_01_sfnt_off000095ad.bin
b53805a3dee6bf776d9da6589b9072677688e2d36e2131099791baf60f968374		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95AD 10288 bytes
font_02_sfnt_off0000b928.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB928 16312 bytes

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