Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74468ec32e72374…

MALICIOUS

PDF

83.9 KB Created: 2021-03-23 01:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 40f0e8999899c1b36bda4c2fa051c76f SHA-1: 56b7ebff06044dff5e61688d1d43dd4139d4f912 SHA-256: a74468ec32e72374063028ec35f4fed7584bf28dd53db139c7e6724ab8cf2ead
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics indicate it functions as a link farm, directing users to multiple external domains, with one URL specifically containing a keyword that suggests a targeted lure. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=diane+borchardt+daughter PDF link annotation
    • https://zupedadozox.weebly.com/uploads/1/3/0/7/130738974/sonezukuzexirugo.pdfIn PDF document text
    • https://cdn.sqhk.co/zubafena/jbjc7ic/37450258559.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/1607095.pdfIn PDF document text
    • https://delujopasetew.weebly.com/uploads/1/3/4/3/134399242/pufis.pdfIn PDF document text
    • https://fefojaza.weebly.com/uploads/1/3/4/4/134480993/5b4f1a95f55855.pdfIn PDF document text
    • https://jumewabob.weebly.com/uploads/1/3/0/7/130775497/rudik-wuritexedibewo-setuxupuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/rolaravez/cgjgjij/calendar_2020_with_holidays_and_events.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/bibllhh/motulexaxus.pdfIn PDF document text
    • https://cdn.sqhk.co/wofikubid/gdf0gig/littlest_pet_shop_42069.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/qjb8hd8/inside_out_movie_anger_character.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nurekalu.epizy.com/linakivexuvapu.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/what_time_does_walmart_photo_center_open.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85d103ac-e265-42c6-a7ae-fc0a0c62132d/22329850444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e58abd57-8a6f-477e-907e-ab1f48e83e5a/south_carolina_driving_test_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/scientific_method_experiments_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8113f1b0-72ae-4c25-8ca2-883d3174b159/84988710615.pdfIn PDF document text
    • http://wewadem.epizy.com/26001900093.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/45530367887.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/3897232610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/294b06c0-769b-4e2e-80e7-79c93aa533ca/66505028321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b61daaf4-163c-4b03-9a41-b88178c2b68c/logo_quiz_world_answers_level_5.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_off00010a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A22 5128 bytes
SHA-256: e62452942bf6c328d8efefa93b0238e01578d45c70c5b74e56aa4e324c6f4750
font_01_sfnt_off00011b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B90 11812 bytes
SHA-256: cd9f502a37e627e0e4652f49511b1ee56fddd37e2a788691ef1316054b104a50

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