Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3f84e724e78aab…

MALICIOUS

PDF

41.7 KB Created: 2020-07-07 12:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 5fb674630bdfb66f7d6f0a49090da341 SHA-1: 636f163c31d667640d4a91c5572cc8fecfa2d14b SHA-256: 0e3f84e724e78aabb2b4deabcae7a1c961f35422d461b3ba3594f712a8482e08
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.cc', and a large farm of links hosted on disposable domains. These links are designed to direct users to malicious websites, likely for phishing or to download further malware. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=architect%20portfolio%20template%20pdf#architect+portfolio+template+pdf In PDF document text
    • http://files.skincarebyadrianag.com/uploads/1/3/0/7/130775827/6a94d7.pdfIn PDF document text
    • http://files.poleshiftnews.com/uploads/1/3/2/8/132815961/493882.pdfIn PDF document text
    • http://files.iluvmemore.com/uploads/1/3/2/3/132302815/ea158.pdfIn PDF document text
    • http://files.williammonaguenativeart.com/uploads/1/3/0/7/130739747/vunidegote.pdfIn PDF document text
    • http://files.hallielee.com/uploads/1/3/2/8/132815961/5788720.pdfIn PDF document text
    • http://files.orangehistory.org/uploads/1/3/1/3/131380998/6a7d3c8e67aa6.pdfIn PDF document text
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdfIn PDF document text
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kofimefek.files.wordpress.com/2020/06/97887574771.pdfIn PDF document text
    • https://nosuvul.files.wordpress.com/2020/06/wimubo.pdfIn PDF document text
    • https://pezufonitibi.files.wordpress.com/2020/07/81047254513.pdfIn PDF document text
    • https://duxijepur.files.wordpress.com/2020/06/bobedalotimasigafa.pdfIn PDF document text
    • https://xipunibeneta.files.wordpress.com/2020/06/94424715301.pdfIn PDF document text
    • https://dekosim.files.wordpress.com/2020/07/46665915014.pdfIn PDF document text
    • https://dizujased.files.wordpress.com/2020/07/mobuvufupipukax.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000680b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680B 4888 bytes
SHA-256: a127c6e31e35d11bde28da20defbfcf52bccdca87eb391386732648cd6d3a118
font_01_sfnt_off0000789d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789D 9868 bytes
SHA-256: fa05b2d28e26c8cddae1d6b5bf52e7f6f69a362902c3430d2b98534113f6a377

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