Malicious PDF — malware analysis report

Static analysis result for SHA-256 626f5b652e0ea835…

MALICIOUS

PDF

47.7 KB Created: 2020-08-22 21:14:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adba36238fb6742ca05e8f04fc1eceb7 SHA-1: 83a1eaa4fbd93c8176af2da9b254dded40cf16e8 SHA-256: 626f5b652e0ea8353ba8d40c60d80b0534543ca26c90fcbdc9305eed1791f095
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

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=ielts+speaking+band+9+answers
    • http://files.thefairyhostel.com/uploads/1/3/1/4/131407977/748715.pdf
    • http://files.joaquinperezortega.com/uploads/1/3/1/3/131397946/vuwuletiwif.pdf
    • http://files.dramaaroundtheglobe.com/uploads/1/3/0/9/130969761/4681863.pdf
    • http://files.14skydesign.com/uploads/1/3/1/8/131856158/guxekizimubin.pdf
    • http://gibinot.grandpajoesitaliankitchen.com/uploads/1/3/2/3/132303382/1d1ac140fc3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/pipuzedenujomemozalon.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6143/files/amharic_english_bible.pdf
    • https://cdn.shopify.com/s/files/1/0448/9995/8939/files/tobenokulugaziporavurixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7668/9825/files/4592823074.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/isg_blockade_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/sevidozesiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5070/3779/files/32443591046.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/rakaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6176/files/50483035383.pdf
    • https://cdn.shopify.com/s/files/1/0464/5791/3512/files/3679802987.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007284.bin
a40ff40c615a8103c8e44731ade72468615ba7170ee0a459d3f62339eb1778b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 5516 bytes
font_01_sfnt_off0000854c.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854C 1800 bytes
font_02_sfnt_off00008ddc.bin
72021dae38a9cb2b788ed6942d87ad043e7299108956a8afeb74ae2219a876e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDC 10380 bytes

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