Malicious PDF — malware analysis report

Static analysis result for SHA-256 969726994ad5fcfb…

MALICIOUS

PDF

44.3 KB Created: 2020-08-01 20:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 122a5b7414ab9f0b5b8384bd1297471d SHA-1: fd10679e608071c68f17b4df5abdba64fdfd6c17 SHA-256: 969726994ad5fcfb5d7f14c3496bc6fe6cecdc5b27de13c057b1dc7dfecdcef3
152 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing a large number of embedded URLs. One of these URLs, 'https://ttraff.ru/pify?keyword=pandas+dataframe+to+json', is identified as a known malicious redirector. The presence of numerous links, including this malicious one, strongly suggests an attempt to lure users to malicious sites. 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=pandas+dataframe+to+json
    • http://files.doggiestylezllc.com/uploads/1/3/1/3/131383860/tuvinos.pdf
    • http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdf
    • http://files.stevemillerworldview.com/uploads/1/3/0/7/130739062/6025175.pdf
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/mamututafejifavopipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/asus_rtn66u_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0437/0831/7850/files/57374204742.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/tavudufugaroturoxile.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/cat_246_skid_steer_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/83964203527.pdf
    • https://cdn.shopify.com/s/files/1/0437/7519/7346/files/pofitadarosowike.pdf
    • https://cdn.shopify.com/s/files/1/0437/2129/3974/files/gusumonuwaginolumi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/lorezaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/21709311845.pdf
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/93441459602.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_off00006cfa.bin
e8b06053d3a805a6dadf966a280547fc079c59fc175fb7b9302d6bb55f70c42a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFA 5096 bytes
font_01_sfnt_off00007e40.bin
6b2a7cad561d323cb9ac2b1178f025ddcba95e1d4a793cf13848badb70ff34ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E40 11144 bytes