Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b462baac461817…

MALICIOUS

PDF

45.6 KB Created: 2020-08-11 07:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4292cf4cb9e5d9ab39d6610cf9cf4233 SHA-1: 74ac668b220d23f160f95be548034f6b6e8bcfad SHA-256: 60b462baac461817ba93c89a4a3087eea92dca954275f20731aefbcc1c75d5c0
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to manipulate search engine results, likely to drive traffic to malicious sites. 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.com/pify?keyword=perry+anderson+el+estado+absolutista+resumen+pdf
    • http://files.hprugs.com/uploads/1/3/1/0/131070481/lamikugoxe.pdf
    • http://files.meganhigginson.com/uploads/1/3/1/0/131070611/7910132.pdf
    • http://kuxikib.horsedream.ca/uploads/1/3/1/6/131636648/vevixejokukazos_jikumufibulu.pdf
    • http://files.solidrockglobal.org/uploads/1/3/1/3/131383657/583346.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/pathfinder_inquisitor_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/dilumademubozonez.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/lovof.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/acute_glomerulonephritis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/pulse_amplitude_modulation_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0435/5650/3707/files/preschool_alphabet_tracing_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/jomidafudagesa.pdf
    • https://cdn.shopify.com/s/files/1/0448/4582/6210/files/arduino_robot_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2022/files/40213425099.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3029/files/may_2020_monthly_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/libopu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/english_to_japanese_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/xuzavorimegiwepabu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006efb.bin
f31b04b17b713f9c8f0a5294057dacc0c163ab54e2e5557a0dcd850ed2aef637		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFB 5432 bytes
font_01_sfnt_off0000815d.bin
0f8f51dc02b70a25e398ebe16803dbc50ea55154afed4fe6cd874bdca125f2c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x815D 11672 bytes

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