Malicious PDF — malware analysis report

Static analysis result for SHA-256 001bfe48f9539763…

MALICIOUS

PDF

49.6 KB Created: 2020-07-31 08:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 478ca240d78ab3a6ddf9fd29580e5567 SHA-1: c83a953660e499c983aadd3ece49fa124c6884a7 SHA-256: 001bfe48f95397631f60e2b13860a41a3616204bfcfac3927cbd6e8a1f2c1271
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm pattern, with numerous embedded URLs, many hosted on Shopify, likely intended to distribute further malicious content or engage in SEO manipulation. The ML classifier also strongly indicated maliciousness.

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=sedes+areandina+bogota+pdf
    • http://files.texaspoweragents.com/uploads/1/3/0/7/130738504/fuwezifiwakinesab.pdf
    • http://files.pirhonenconsulting.com/uploads/1/3/0/7/130775701/zikemosiwu.pdf
    • http://files.wildemu.com/uploads/1/3/2/7/132740204/xesejozibusavavaboj.pdf
    • http://files.daniellabloom.com/uploads/1/3/1/8/131871602/kukim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/3371/4070/files/tetasipikefeburofi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9770/1017/files/35862424362.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/59136144508.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/pukijuzerukugotabo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/23371731131.pdf
    • https://cdn.shopify.com/s/files/1/0433/7260/9686/files/tigatulani.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/87039620723.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/62032647343.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/13925482233.pdf
    • https://cdn.shopify.com/s/files/1/0432/8525/0216/files/maratokusovulaboxude.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0376/files/9709598083.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/virobavozejuta.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084be.bin
8a9b1b7a8c700455ec095ea086402d78bc6e11254cfe54684accf5a688aedb97
pdf-font-stream PDF embedded font (sfnt) at offset 0x84BE 5208 bytes
font_01_sfnt_off0000966f.bin
83688bc4936771db034c51e8d463f6e00a463c9a9fa0ab383ee5b54c10eb653c
pdf-font-stream PDF embedded font (sfnt) at offset 0x966F 10220 bytes