Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b57530f73d1f91d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-01 12:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa023cd119ecf40a994e883d37398ef1 SHA-1: 5876141c7a60e9918c9c6de0a98ace9a831cf8e7 SHA-256: 8b57530f73d1f91d3e7bdff5c8d3dfd1319f93bc3e1a6ec2cf3787887bbf4f1e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by a machine learning classifier and contains a significant number of embedded links to external PDF files, many hosted on Shopify. One of these links points to a known malicious redirector. The presence of a link farm suggests an attempt to manipulate search results or distribute further malicious content, potentially leading to phishing or malware downloads.

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=2204355+i%2527+m+feeling+lucky
    • http://files.sillassenhalf.com/uploads/1/3/0/9/130969555/bevijidu.pdf
    • http://files.theparlepodcast.com/uploads/1/3/2/6/132681992/pitujewed_pirenu_gizigajegaxuxo.pdf
    • http://files.vucatools.net/uploads/1/3/1/3/131378816/2e95602e0f761.pdf
    • http://files.gracecommunitychurchchesapeake.com/uploads/1/3/2/7/132740836/zerivilukezipu.pdf
    • http://files.beattieartworks.com/uploads/1/3/0/8/130874253/9901399.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/35394083495.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1130/files/44576576672.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/charger_bass_boats.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/79967204751.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/craftsman_gold_6._75_lawn_mower_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8036/files/the_china_study_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/4012/9692/files/47845251403.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fawalonilon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4242/files/dosamama.pdf
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/wuradosorafunu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2739/files/xuweluwegugavixanafasus.pdf
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/64230723559.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a4d.bin
4cf1752e7b67ccdad44b7612d60734025583c63bd21c3427eaa170a940730f72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4D 5472 bytes
font_01_sfnt_off00006d09.bin
bd61691e34ecf514475d0a9fc262fa348988ec5146b562ab8d032c42fa5a0bea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D09 10360 bytes
font_02_sfnt_off000090c5.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90C5 16204 bytes

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