Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f354f90035ff97…

MALICIOUS

PDF

79.1 KB Created: 2020-11-25 01:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 55fb79031d15254861b3dd6f66103cdd SHA-1: 2782891ba527e843bb137d6bc1744a5e35f2e7ec SHA-256: 43f354f90035ff97abcc473d2bbe4814955afc54318bdb3e6d7a66d0b5b4b750
176 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. It uses a QR-code lure. 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 6

  • 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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafftec.ru/strik?utm_term=download+kodi+apk+file PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461761/normal_5fa60d82e2ea1.pdfIn PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/xifizus.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/9397168.pdfIn PDF document text
    • https://vajuwapokovis.weebly.com/uploads/1/3/4/3/134361820/6751bdc939.pdfIn PDF document text
    • https://fevapeju.weebly.com/uploads/1/3/4/4/134468187/8961401.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/golarovunedajaroravipig.pdfIn PDF document text
    • https://s3.amazonaws.com/gajejasa/cl2_boiling_point_in_fahrenheit.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/manual_innova_31403.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/rasunaxoxokosotodemob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11eedb34-7b27-4360-8e05-2c8eae5abea3/wogapof.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/word_opposite_in_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c41e2c34-0c0c-4cb5-9814-749b1e644111/examples_of_homeric_similes_in_the_odyssey.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/nice_asthma_guidelines_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed1eb4ff-7b49-4117-b358-d8b0f79a5908/jodasafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3128d696-401a-406d-9a79-7172ea23fd2e/pezadoxopuz.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/majnu_bengali_movie_video_songs_free.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn 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
stream_003_off0000e240.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE240 13768 bytes
SHA-256: 1c9d8a27a4fa5ec2549e9b021fa84c7831459748e8e36614c328b5da2064b0c4
font_00_sfnt_off0000d159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD159 4916 bytes
SHA-256: 4e3e2fd89d69c154a01843942a3b918e3e2d80b772da864207160e3625f127e9
font_02_sfnt_off000108dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DD 11572 bytes
SHA-256: 4a860f7aef8fcb272d63345c654a50c3070b9783edf162b687faee4313b2226f

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