Malicious PDF — malware analysis report

Static analysis result for SHA-256 2194710e0c8179d2…

MALICIOUS

PDF

43.0 KB Created: 2020-10-11 20:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8a27d9d174658d8d7ad2fcc3bf80c9ec SHA-1: 5df8b9ef99b9d9759c78a14925b071c1b67a3551 SHA-256: 2194710e0c8179d23bce64ae817993fd78aee09190a2fff86295c4fcbec61fa2
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a URL associated with malicious redirector infrastructure, specifically prompting a download for 'zombie catchers mod apk 1.29.5'. This indicates a social engineering attempt to trick the user into downloading malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/pify?keyword=zombie+catchers+mod+apk+1.29.5 In PDF document text
    • https://site-1039602.mozfiles.com/files/1039602/66072489391.pdfIn PDF document text
    • https://site-1039405.mozfiles.com/files/1039405/zaladedu.pdfIn PDF document text
    • https://site-1039320.mozfiles.com/files/1039320/83067153154.pdfIn PDF document text
    • https://site-1042888.mozfiles.com/files/1042888/41263372283.pdfIn PDF document text
    • https://site-1043803.mozfiles.com/files/1043803/wugojuxefejasinoziwamo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3077/1869/files/john_deere_model_b_carburetor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0501/2891/files/lasorarilazifumilowevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7813/9035/files/henry_morris_study_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3196/5077/files/42022793002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8320/5281/files/weather_channel_bonners_ferry_idaho.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1533c5e9-f92a-464b-8dd6-0dfe91db01dc/razigubolixigivaxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/978dd036-7634-4822-94e0-314f4502e519/sevutobojexe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDF 5620 bytes
SHA-256: 25ff4959af2d9c3043da6bb184b921023a06ff21ca1df10ab379052b97b14884
font_01_sfnt_off00006f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F03 10012 bytes
SHA-256: 97c338e5731998561c3b4b991aadd7901129b4f5082465e6cbe2d8b87eb61aaf
font_02_sfnt_off00009158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9158 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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