Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12b5aa21a32ffe9…

MALICIOUS

PDF

74.6 KB Created: 2020-11-14 06:18:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 61cea61ddb9bfaea966df8449d834fa8 SHA-1: 2346d74fcdf5abba814ca5397aaa51807fe1f61a SHA-256: a12b5aa21a32ffe9b517087a0746d3f8294522ef5a0cc20029535852d4967c2c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffset.ru/123?utm_term=wellcare+wellness+rx+2020 PDF link annotation
    • https://kagadema.weebly.com/uploads/1/3/4/4/134456650/purowovefudijewe.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/5b1ac405d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5fa114dd29090.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/8339796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f8c24d8185c7.pdfIn PDF document text
    • https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/dowamudibumokebet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394079/normal_5fa6237ddee9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5fa11326eb2d7.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/4d8f9f42-4e19-42a9-910e-f9a209be70d8/8317715630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce3744c2-62aa-4355-b070-5b404a2ff78f/what_is_an_investigative_question.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71238427-cedd-4cdf-8e2d-134648acd564/baby_shower_blessings_bible_verses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f353cffc-b213-4a2e-b614-7abac53feb72/tufojunokusituzuf.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/53466248327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d3046a-3a17-488f-8a45-c4f75681789d/rustic_gardens_weddings_and_events_center.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4accc7-8115-490b-a344-05b79adc9f69/mirialem_ahmet_aa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E2 5240 bytes
SHA-256: 8bb9b00fb5303c7bb3ee6dcfe0b1820cc08f592a4047da5f833f0cb9595648a2
font_01_sfnt_off0000e2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DD 10952 bytes
SHA-256: e93bdb80398d61dfcb44eb61224f82afca1a9dcc55fbae8d47407928686d5a1f
font_02_sfnt_off0001085a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085A 16192 bytes
SHA-256: 10dd024b7aca9c0af4782f0042823f5a6a937774ccb4b3ed12dd2ab58f6a5f2d

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