Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0262a86b971fd80…

MALICIOUS

PDF

48.6 KB Created: 2020-08-07 04:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eef8f00c9243bf2c464ddf75cbc2b3b6 SHA-1: 6002ed2dd272d77733cb36c8d96eaddf539b6e65 SHA-256: e0262a86b971fd80daf8a3ed89b15c631c1b95523f3ba35007b4c833d0bd6ca7
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, forming a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is ttraff.cc, which is used as a redirector. The ML classifier strongly indicated maliciousness, and the presence of a PDF redirector link confirms a phishing or redirection attack pattern. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=equilibrio+de+mercado+pdf
    • http://files.aj-marketing.co.uk/uploads/1/3/1/8/131858916/mixiwovuk_zovopigane_zuxowe_vaxetitutawig.pdf
    • http://files.bakedwithhearts.com/uploads/1/3/0/9/130969461/8cd32.pdf
    • http://files.xabobcats.com/uploads/1/3/2/7/132740293/fepevuvi.pdf
    • http://files.novadancestudios.com/uploads/1/3/2/7/132740580/kulubepujunoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/rifomagovumusunirij.pdf
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/kavuwesugelizu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/gonupupagabonudadusikojon.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/95439586947.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/kayarian_ng_pang_uri_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/75560220079.pdf
    • https://cdn.shopify.com/s/files/1/0434/2769/2695/files/33613263607.pdf
    • https://cdn.shopify.com/s/files/1/0430/5240/0793/files/vemalak.pdf
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/rikokiwowasagegu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/jufor.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_off000066e4.bin
79fb1ea015c5ffe1b97709131948d5fa698c7816640e1c896d716ad958e8ce83
pdf-font-stream PDF embedded font (sfnt) at offset 0x66E4 5348 bytes
font_01_sfnt_off000078f5.bin
4998403803b58a59edf3cf423350c9325d2bba2817884e17f19553a054cff774
pdf-font-stream PDF embedded font (sfnt) at offset 0x78F5 12128 bytes
font_02_sfnt_off00009f61.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F61 16060 bytes