Malicious PDF — malware analysis report

Static analysis result for SHA-256 833e1444680a3644…

MALICIOUS

PDF

42.5 KB Created: 2020-08-24 09:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 301b6a533866c0520223488f0eae308a SHA-1: f440570c974cde09271f72c249bc4d5213f09fa6 SHA-256: 833e1444680a36449d75bf36e5ba841f672f51064e0637c4f88cf56b444a7eb3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including a critical redirector link to 'ttraff.cc', which is flagged as malicious. The document body, though partially garbled, mentions 'Botim for android' and includes the malicious URL, suggesting a lure to download potentially unwanted software or malware. The presence of a large number of external links, many pointing to Shopify, indicates a link farm designed to distribute malicious content.

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=botim+for+android+4.+0.+4
    • http://nemadu.kaimukiymca.org/uploads/1/3/2/6/132682076/4652380.pdf
    • http://duwegan.samflynn.org/uploads/1/3/0/9/130969204/a98c375.pdf
    • http://files.piedaterrenewyork.com/uploads/1/3/1/8/131858540/xatedenev.pdf
    • http://kizipix.morningnoodle.com/uploads/1/3/1/3/131380081/71cdfa255.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/55379519762.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8280/files/80405470113.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9459/files/denesogajekosamatot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/wastewater_treatment_process_flow_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/dobin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/zelda_breath_of_the_wild_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/38550661051.pdf
    • https://cdn.shopify.com/s/files/1/0437/2076/9685/files/75989257440.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/98328184351.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aaa.bin
b9265ae95b0f441926a4122d647aa7d9ced9354720dfbf1c423de7cd10e1da95
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAA 4824 bytes
font_01_sfnt_off00006ae7.bin
24427eadc981831d25e0b6103ed050a5ec0223144e3316377502163168350de2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE7 10588 bytes
font_02_sfnt_off00008ee8.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE8 4324 bytes