Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f3569a2d534ae2…

MALICIOUS

PDF

82.1 KB Created: 2020-11-10 07:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0845076f98aa728e3f06ccb9aacb6f03 SHA-1: 90de0b84c1d811a361ca276f5843f00d55dfe73d SHA-256: 55f3569a2d534ae252d323c2c4d632633d4cfc6008e115689ba62ffb5befddec
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of malware. The presence of a large number of external links, identified as a 'PDF_SEO_LINK_FARM', suggests a phishing or SEO spamming campaign. The document body, though heavily obfuscated, contains text related to a 'Kia Sorento manual', likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://trafffi.ru/123?keyword=kia+sorento+manual PDF link annotation
    • https://resumasilazivo.weebly.com/uploads/1/3/4/5/134509929/judikigenuporit-podusowisuxifi-fowimodono.pdfIn PDF document text
    • https://mibonapa.weebly.com/uploads/1/3/4/3/134308174/rubakudabopejas.pdfIn PDF document text
    • https://rariborujur.weebly.com/uploads/1/3/4/4/134443596/05360e040.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/2288239.pdfIn PDF document text
    • https://febixitojujemo.weebly.com/uploads/1/3/4/4/134402622/pabupukis.pdfIn PDF document text
    • https://faluwizux.weebly.com/uploads/1/3/4/3/134372305/1971073.pdfIn PDF document text
    • https://rugozodamutar.weebly.com/uploads/1/3/4/6/134600103/3c74e81d8397d.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/rinedufiwaditarip.pdfIn PDF document text
    • https://sakifawabepufa.weebly.com/uploads/1/3/4/4/134466371/5077117.pdfIn PDF document text
    • https://jiluzeros.weebly.com/uploads/1/3/4/3/134365673/3b7db7.pdfIn PDF document text
    • https://terifurarogo.weebly.com/uploads/1/3/4/3/134317228/980511.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/vuforewebub/shark_steam_mop_instruction_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f08a1e5-d587-4d6a-ac01-630849bab122/56488897544.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/pre_algebra_caching_answers_box_6.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/54280967129.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/understanding_islam_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7a75db-19b2-40db-b544-31ae3e1a2826/81819228244.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C0 4684 bytes
SHA-256: 46b730ab430755a2d77ecf674f65e4a32cfb46d5ea5eefdd9e5b0afa52160336
font_01_sfnt_off0000f28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28A 10920 bytes
SHA-256: 83eecc13b7368f100c16e7058bf26fb731cddb8b8f0a649518f5d0a600d8668c
font_02_sfnt_off0001181c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181C 16144 bytes
SHA-256: 764fe263e68fd20aff2bbd96e69f5a400d440299d02096befa162391f913c7cf
font_03_sfnt_off00012d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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