Malicious PDF — malware analysis report

Static analysis result for SHA-256 01a8fc0440019e97…

MALICIOUS

PDF

34.2 KB Created: 2020-10-04 04:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7259839ed57be7d8a819bb3e8f331e10 SHA-1: 5a1339ba5bfc24622795a3b379246827b806b45a SHA-256: 01a8fc0440019e974f616b18fe274b56c844a33b9229f203169035e28ce7e560
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and are flagged as malicious redirectors or part of a link farm. The document body, though heavily obfuscated, contains text related to 'igt slot machine manual' and includes URLs that appear to be part of a SEO spam or phishing campaign. No scripts were extracted, but the presence of numerous malicious links indicates an attempt to redirect users to harmful content.

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://gettraff.ru/strik?keyword=igt+slot+machine+manual In PDF document text
    • http://files.lamanifpourtous44.com/uploads/1/3/1/1/131163747/d45d9.pdfIn PDF document text
    • http://gapebi.kevinlow.net/uploads/1/3/2/7/132740228/2c575156ac76d0.pdfIn PDF document text
    • http://momepuzo.premieravproductions.com/uploads/1/3/1/4/131437699/wuwiwatifako_bezufibobezales.pdfIn PDF document text
    • http://files.ramonbullard.com/uploads/1/3/2/7/132740435/xopobivagozapun.pdfIn PDF document text
    • http://files.alexcoxgraphics.com/uploads/1/3/2/7/132740905/xuligufobut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4578/8565/files/eberron_city_maps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/bingo_blitz_support.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0905/7441/files/clutch_energy_drink_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5728/6820/files/apk_unlimited_gems_clash_of_clans_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7864/2581/files/35318382231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/very_old_man_jenkins_sr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/zarasexenewajezelugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/golds_gym_elliptical_310_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9170/9092/files/jibusojepef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8113/7821/files/constructions_worksheet_geometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2982/7231/files/john_oliver_family.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000490e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x490E 5052 bytes
SHA-256: 662319b23fc0aca5423e0e9380ed9047c90ed37867b92c18f6e4456440f58e27
font_01_sfnt_off00005a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E 9960 bytes
SHA-256: b76bda9b7156688a7753391976517522c5b6b73fc461604aecd0dd23fb9c56d8

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