Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ff2769d2f5c76f…

MALICIOUS

PDF

45.4 KB Created: 2020-08-14 16:40:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0716d617a718c297dc757e8ac32d9d9 SHA-1: 05b8c77125dbdb4709198d4056611e237e848352 SHA-256: 45ff2769d2f5c76f07d4079c0d193695ba3a52f112bd00324d1bf315d607761c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with malicious redirectors or unknown content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to 'ttraff.com', indicating a redirection to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further supports this by identifying a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate-looking documents.

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.com/pify?keyword=avanza+g+manual+2010+jakarta
    • http://fopogiz.powerofbankinginyourhands.com/uploads/1/3/0/9/130968973/53402.pdf
    • http://tanozaguw.stallaureas.com/uploads/1/3/1/6/131636725/5139815.pdf
    • http://files.themagicofwill.com/uploads/1/3/1/4/131438127/zixorusudekago.pdf
    • http://files.ourclarkfamily.com/uploads/1/3/1/3/131380263/vodutakemij_jetexe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/root_cause_analysis_in_healthcare_tools_and_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9576/files/caverna_rules.pdf
    • https://cdn.shopify.com/s/files/1/0437/3941/4677/files/16695398092.pdf
    • https://cdn.shopify.com/s/files/1/0433/9308/9692/files/75876711350.pdf
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/17574488183.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/92255295510.pdf
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/66857039362.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/winob.pdf
    • https://cdn.shopify.com/s/files/1/0436/2865/8848/files/nozewogubazezuravaxixeta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/malerofefamizekigo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4954/7936/files/xizuwitubopubabanu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/bhagavad_gita_chapter_15.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_off00006611.bin
b26238b0c0962e957dfa78b3eda63165d0b36e1e8c41e6790231d6ce0d1a02b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 5392 bytes
font_01_sfnt_off00007870.bin
d8fa5e5415a45b9f94e2e17e951310d5d44e4f52ecc1f4048caa878f09e28424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 15104 bytes

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