Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a833f538a20d3c5…

MALICIOUS

PDF

61.2 KB Created: 2020-12-16 23:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1e0833a9a44ee6d041c3e8920d396ba0 SHA-1: 357a86ec775abdff671b55b2af41dbd725aa0b4d SHA-256: 7a833f538a20d3c5ce05013f2af50fa574468a1c3bd0818c0a6ae2849bd93963
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/123?utm_term=alphabet+poem+examples+az, is identified as a primary indicator of compromise. While no scripts were extracted, the presence of a malicious link strongly suggests a phishing or redirection attempt, aligning with the 'Spearphishing Attachment' technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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/123?utm_term=alphabet+poem+examples+az In PDF document text
    • https://static.s123-cdn-static.com/uploads/4491688/normal_5fc6d06ae2f98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415526/normal_5fbd0c4758405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5fd19fe20cc2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f872a93248b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fae451ff-6636-4208-942e-942d9f06ebb4/diatomaceous_earth_spider_crickets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae36070c-24ae-485b-9dab-810e5d6b5401/hindi_movie_yaadein_mp3_songs_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ffe07a6-70d4-4fe4-86f4-58b53ff79958/koxofapikopevege.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/charlie_malayalam_movie_in_tamil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b51b40f1034a5cae9388/t/5fc38feb5147b14804a0efc6/1606651884447/fikelozokajowesijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e3cf75-bf64-4e45-83bb-2245692a5048/25888849712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66997866-7d87-4a35-a765-376fe9a6ef91/kusasekizerurererelonuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba0f567-51bb-4565-a22a-a29b8d763347/dyson_dc44_animal_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67dff911-880c-47ef-a20b-276b45c336d7/931277657.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/jiketatopilafinebogido.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_off0000b554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB554 5208 bytes
SHA-256: b75d0ab89e0d896e9a0227c502a88a6a0e99f11a3758f33dcbbfc11b28cb634f
font_01_sfnt_off0000c6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E5 9752 bytes
SHA-256: 4ce181146d221dd9b94e7a578f3297362045404828aa1512c94d602d81bcbce8

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