Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e169045b6e515aa…

MALICIOUS

PDF

79.1 KB Created: 2020-12-28 11:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 4fe63e7249fe01f84402f354ca1da516 SHA-1: d41dc632e9086e735fee9cece958699dbf5a4b3e SHA-256: 0e169045b6e515aa8cf520f3e41a96eb36a270c2e6d169e2b77a4ff73132c41a
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'warship battle cheat apk download', suggesting a lure for potentially malicious downloads. The presence of numerous PDF links further supports a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=warship+battle+cheat+apk+download In PDF document text
    • https://cdn.sqhk.co/sirejeforox/xoghicF/69530591710.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/hdFhgjb/spend_apple_gift_card.pdfIn PDF document text
    • https://viwosexoteb.weebly.com/uploads/1/3/4/6/134631328/5557493.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/jIEhehj/cruise_lines_stock_market.pdfIn PDF document text
    • https://cdn.sqhk.co/lamikolo/iyWHNhe/let_s_create_wi_rapids.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://s3.amazonaws.com/mukut/87288572021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0817ea4c-626a-4db5-80ae-82cbc0e65dce/aa_na_meetings_topics.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/wevimanelefunazinux.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/limakupiguk.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/71746456972.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/synonyms_and_antonyms_worksheets_for_7th_grade.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3A 3312 bytes
SHA-256: e08d8b90eb2202b218c1347a2bb4fe1e78ed85b9e3a4e57146ebcb1cdd109ce9
font_01_sfnt_off0000ea26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA26 5256 bytes
SHA-256: 06e4e9dd8fd3c68a2cbf4f32dbba7f184af2a24cd1f4b484ac3b2c6a31440bd0
font_02_sfnt_off0000fc04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC04 10768 bytes
SHA-256: 3f19101b839153f673b9888989cd5ede476f78542002230ae5239f6db2343ed9
font_03_sfnt_off000120ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CE 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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