Malicious PDF — malware analysis report

Static analysis result for SHA-256 54cb084aad836851…

MALICIOUS

PDF

44.5 KB Created: 2020-07-30 08:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35cf0d002184a88f74d714a2687f70b7 SHA-1: a447d10559258053104b1ad46211bd044e1a9674 SHA-256: 54cb084aad836851857c87ffe019c5e2e1b70da63e2d2e18a4cabec0486daa8c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm, with many links hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector and link farm indicates a likely phishing or malware distribution attempt.

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=weekly+language+review+5th+grade+pdf
    • http://files.nerissalee.com/uploads/1/3/0/7/130740231/620874724.pdf
    • http://files.milkshedcatering.com/uploads/1/3/2/6/132680796/28a7f3.pdf
    • http://files.tracyhansencoaching.com/uploads/1/3/0/9/130969115/d78bdfd3e53.pdf
    • http://files.qatarmma.com/uploads/1/3/0/7/130740571/fununomogadoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/59965556128.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1770/files/28457373303.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/zupetavepafu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3001/2316/files/33866490575.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/legez.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/senuxejiweravivipasepab.pdf
    • https://cdn.shopify.com/s/files/1/0437/4390/3905/files/dujotuwugisegofu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/tojoruwosuzuxoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/gitefazawiwupefikijazew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/popobivakojamisab.pdf
    • https://cdn.shopify.com/s/files/1/0434/6413/0725/files/73525781991.pdf
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/padusobubev.pdf
    • https://cdn.shopify.com/s/files/1/0433/5783/1326/files/12116436485.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_off00006ea1.bin
89201c75e277b4edee846481a1de2140dcadef6b92e91b35010be067f245d553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA1 5352 bytes
font_01_sfnt_off000080f4.bin
85c37a4f5d1ad199b104d1cdb17f806fc3725061a4d23d183c39b1894436b056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F4 10536 bytes

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