Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe5e857619bcb57…

MALICIOUS

PDF

74.1 KB Created: 2021-02-17 17:22:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3b9da4d073c8ce1716fd66252b7ba409 SHA-1: 54914b8e1ae23ecc112c93ca8dc43a0d35dbe534 SHA-256: cbe5e857619bcb57eabdba63ed88049bb8fd8117056adfbe3c9ef5edacbd5a15
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, suggesting it functions as a link farm or SEO spam, directing users to potentially malicious websites. The primary lure appears to be a search result for "My favourite book holy quran essay in english", which redirects to a URL containing a keyword search. The PDF structure and embedded links are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wb?keyword=my%20favourite%20book%20holy%20quran%20essay%20in%20english PDF link annotation
    • http://fenellalucynelle.info/transformers_prime_bumblebee_kills_megatron_fanfictionw21db.pdfIn PDF document text
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/7453221.pdfIn PDF document text
    • https://xuvupidorok.weebly.com/uploads/1/3/1/4/131407629/dixito-koxozivafazimi.pdfIn PDF document text
    • https://zewakutij.weebly.com/uploads/1/3/5/3/135327761/nameresajozumu_rilorinitufare_vewisupupew.pdfIn PDF document text
    • https://dolivosogokate.weebly.com/uploads/1/3/0/8/130874088/1986981.pdfIn PDF document text
    • http://bitsracing.net/old_paper_texture_word_templateq1h4k.pdfIn PDF document text
    • https://miwunogix.weebly.com/uploads/1/3/2/8/132814940/soliz.pdfIn PDF document text
    • https://cdn.sqhk.co/korokotuduki/heM9ERC/reversing_roe_netflix.pdfIn PDF document text
    • https://cdn.sqhk.co/tisorobew/bsR2pji/fabfitfun_fall_box_review.pdfIn PDF document text
    • http://sentytld.online/denon_avr-_x3500h_reviewdzqai.pdfIn PDF document text
    • http://rent-nout.site/rijogerijibetnix.pdfIn PDF document text
    • https://cdn.sqhk.co/tigepukeri/9iifvj0/learn_spanish_for_beginners_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/dodanadofu/MgclDrF/zozinenip.pdfIn PDF document text
    • https://zowukudikumo.weebly.com/uploads/1/3/1/3/131382828/kizivusufujud.pdfIn PDF document text
    • https://futinubub.weebly.com/uploads/1/3/5/3/135328842/perafemajasarogir.pdfIn PDF document text
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/5d6d622.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/xiripuruwipefobi.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/63610469863.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/broad_stratiform_regions.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/dajuwosisam.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/95809533290.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_off0000e46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46A 5528 bytes
SHA-256: 5f27b67b896d495ba75167987c94eba35cadfa8b9aaab40e5a65e4cbf87fa6a6
font_01_sfnt_off0000f74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74D 10416 bytes
SHA-256: d9cfaff626e0c9f981b6aa299e35f11e231b95859862fcc201fe24773f2b5fe0

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