Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eca6359b00b4927…

MALICIOUS

PDF

47.2 KB Created: 2020-07-17 04:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da032a28f9a13eac014a0bfabe763283 SHA-1: c9460905dbf32a165c204acff8061e03984e2f23 SHA-256: 7eca6359b00b492756767dd18c0b25f9cd564b708b8d813fcc6e80edbae0a3f3
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically identifies a link to 'ttraff.ru', a known malicious redirector. The 'PDF_SEO_LINK_FARM' heuristic further confirms the presence of a mass external PDF link farm. These elements indicate a clear intent to direct users to harmful websites.

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/wb?keyword=inspirational%20stories%20books%20pdf
    • http://files.wedgwoodsci.com/uploads/1/3/0/7/130775942/nebasanemawalu.pdf
    • http://files.admcclub.com/uploads/1/3/1/4/131453990/2596476.pdf
    • http://files.cockndragon.com/uploads/1/3/1/3/131381802/fawapunufogoj-padomaj-rudamol.pdf
    • http://files.davemounsey.com/uploads/1/3/1/8/131871980/vojezujovef.pdf
    • http://files.studyingdaily.com/uploads/1/3/1/6/131606782/wuvokelogajazop_dikibumuril.pdf
    • http://files.isroflakelanier.com/uploads/1/3/1/0/131070355/93b1d7835395b0.pdf
    • http://files.communityartistsgallery.org/uploads/1/3/1/6/131606594/80d77.pdf
    • http://files.jrmccormack.com/uploads/1/3/0/7/130739740/tepijupaludom_junomif.pdf
    • http://files.jrmccormack.com/uploads/1/3/0/7/13
    • https://kegitemowe.files.wordpress.com/2020/06/zugewudanani.pdf
    • https://kiwuzuk.files.wordpress.com/2020/06/megoxul.pdf
    • https://fijurabowo.files.wordpress.com/2020/07/85117010330.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/xorivixofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4691/files/71868926492.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/daxev.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/29750930307.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71299233386.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/ditumawomazojusepow.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/xutowilefuvitum.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_off00007bf0.bin
efce3d55160f0403a1c438ac46a20b87d3d86a2fd64763be2aa153e4729302d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF0 4964 bytes
font_01_sfnt_off00008cc7.bin
5ac8d53a960cd3556fb4467641f38ec31f682a2be8f731150661ff7790a33ab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC7 10136 bytes

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