Malicious PDF — malware analysis report

Static analysis result for SHA-256 d828ae4ae5b1d367…

MALICIOUS

PDF

46.4 KB Created: 2020-07-28 04:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7e855bcd8b95b5f0129084360ff23af SHA-1: 1a7a94d55ed2cc5e9555130bbcdb6653f8717aca SHA-256: d828ae4ae5b1d3670757cbe1b2a46859a3e5f731bc3bf9bdd212314658fb480f
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for 'atom text editor for kali linux'. This indicates a phishing or social engineering attempt to direct users to malicious content. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for the malicious link. 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=atom+text+editor+for+kali+linux
    • http://files.milestoneco.net/uploads/1/3/0/8/130813841/ribatud-lasaxovu-kojenegobukedi.pdf
    • http://files.alllittlerockstars.com/uploads/1/3/1/1/131164272/kotuge-kejib-xawiweg-jutin.pdf
    • http://files.wheaten.se/uploads/1/3/0/7/130739316/f279939e6c1.pdf
    • http://files.mouselab.org/uploads/1/3/0/8/130874265/nomawabeg_natefukati_mulixuzumili_xonepuganad.pdf
    • http://files.scoopysnj.com/uploads/1/3/2/6/132696029/5635039.pdf
    • http://files.alllittlerockstars.com/uploads/1/3/1/1/131164272/kotuge-kejib-xa
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/86303505283.pdf
    • https://cdn.shopify.com/s/files/1/0437/8643/6759/files/buvarera.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/49730119916.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4700/files/pilunowuwexijosilapulase.pdf
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/ruzaxotovuve.pdf
    • https://cdn.shopify.com/s/files/1/0433/6212/3941/files/50438895552.pdf
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/ranutimirofejavaler.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/tajimibo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/40046747927.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3820/files/rusifufis.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/94704138585.pdf
    • https://cdn.shopify.com/s/files/1/0433/8132/5978/files/96067466293.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_off00007791.bin
a5de7ba1b1ccbb221a9a38f0947dbcc6c7fef36267d586852282628578a0f892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7791 4876 bytes
font_01_sfnt_off00008811.bin
ab368e00a6327f6a3a6baddfb947bf7da23b86a510512f049c6aee77acdd72ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8811 10592 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.