Malicious PDF — malware analysis report

Static analysis result for SHA-256 5edeec940bdd6fda…

MALICIOUS

PDF

58.2 KB Created: 2020-08-28 10:11:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28812a4800581c1f3d69112d943a8120 SHA-1: ec195ee34cb0247915dd43f7ecf3483f6c65695e SHA-256: 5edeec940bdd6fda1e6573fffca3aee4916e67996b933757a2097c5fc048e474
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains the same URL, suggesting the document's primary purpose is to direct users to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=addiction+procrastination+and+lazine
    • http://tabuba.northwordnews.com/uploads/1/3/1/3/131383544/7cd8556ffb3e.pdf
    • http://files.yourfinancialnanny.com/uploads/1/3/1/8/131856380/5595964.pdf
    • http://files.va-homeinspections.com/uploads/1/3/0/7/130739779/wakelibap_guzojulupanow_papimoki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/nedamizeduzasefu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/ikea_kitchen_design_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/7383/0048/files/vibomaxofevibunusirunixuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/good_food_guide_hobart.pdf
    • https://cdn.shopify.com/s/files/1/0430/4322/5751/files/xebarivobewig.pdf
    • https://cdn.shopify.com/s/files/1/0433/4184/0535/files/clearing_browsing_history_on_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/70100596342.pdf
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/38550407692.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/insinkerator_pro_333_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/8434130659.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/grammar_games_esl.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000902b.bin
e589081f6274a1f2264dd8d584b40fb880bf0f5c6ae398cc21320fc7d28de348		 pdf-font-stream PDF embedded font (sfnt) at offset 0x902B 5108 bytes
font_01_sfnt_off0000a18c.bin
6bcc693bba38197aee0e2c0ea2e6cf68e92e3853c1d838bd506a833e3ba0b18e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA18C 10680 bytes
font_02_sfnt_off0000c522.bin
a6627ae4222a3e7506652c12b2a9bf553a577d687ae35438861163f583e44b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC522 16472 bytes

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