Malicious PDF — malware analysis report

Static analysis result for SHA-256 0886e7d6574e337d…

MALICIOUS

PDF

94.5 KB Created: 2021-05-08 00:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2380bf4dfecc7fa0823258a67c531e2c SHA-1: 7b79ded119f7b9d0f8bd30605ffe8f14beb0a5c5 SHA-256: 0886e7d6574e337dbf582f87cd422c85f3a84ebe07957ce7a7880c8eba9be826
126 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://resalured.ru/strik?utm_term=dnd+sheep+token PDF link annotation
    • http://item-get.top/vimuvixanek072k.pdfIn PDF document text
    • https://pipomojum.weebly.com/uploads/1/3/4/4/134437532/5119c.pdfIn PDF document text
    • https://pixufudevolu.weebly.com/uploads/1/3/0/8/130814466/lojumilagewugev.pdfIn PDF document text
    • https://degezikesobito.weebly.com/uploads/1/3/1/3/131384018/1585747.pdfIn PDF document text
    • http://bupro.asia/telisivolowemopkp7qt.pdfIn PDF document text
    • http://topshops.website/running_on_empty_stomach_muscle_lossdqtsd.pdfIn PDF document text
    • http://sehq.xyz/philips_universal_ir_remote_control_manualdbqna.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/fomikuregudobe-raletolemutigi-jonilanupulan.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/c04eb7.pdfIn PDF document text
    • http://topcreditcheck.info/what_does_loc_mean_on_amana_ovenf0gev.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://uploads.strikinglycdn.com/files/5ea8d60f-b3df-45c6-b3d3-e3c3cf8110eb/56868235088.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/letter_of_recommendation_template_for_court.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b7de80-8d3c-4382-a5a7-bdb35e237b3a/big_buddy_heater.pdfIn PDF document text
    • http://babematalal.epizy.com/kingston_council_recycling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1047476f-87db-4d43-9a4b-d2e485067ca3/wikotaxar.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/kifikuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d0a903a-e19c-47c3-9807-9f1230c8bf41/83424894808.pdfIn PDF document text
    • http://gofuxanuwuj.rf.gd/backuptrans_android_whatsapp_to_iphone_transfer_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e25999a9-96ef-46b2-8e38-1c7dc8407181/45737713482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e309285-10f1-49bf-892a-c3327e8e8431/botatiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c47ffa2d-38fb-45bb-9ffb-5e5fe5b2bb41/31011459010.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F27 4512 bytes
SHA-256: d210794dbb894be342e41f32dc0ff4a8cd69accc44aeb1618342abad8ce20103
font_01_sfnt_off00012e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E68 2012 bytes
SHA-256: 9bf50a762ce9d23eff10383a2de81208a0d1dec9c5d2ed5bfcc2ee6b593d0dc1
font_02_sfnt_off000137c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C5 11208 bytes
SHA-256: 0119db172bd7b2efb0b3396d42c36c03a0df6e8b40bc9b8a22b3434dbdc91869
font_03_sfnt_off00015e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E29 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34