Malicious PDF — malware analysis report

Static analysis result for SHA-256 714beeecb7f3b234…

MALICIOUS

PDF

77.1 KB Created: 2021-03-17 03:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d37a6efa4465500093055ada4f7ef913 SHA-1: c4bea6adde8c28997d07d5638f512aeb1ce4b16c SHA-256: 714beeecb7f3b23417edd7637596d66da1d209fe3d6387faddbbf27c0a79e715
194 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to a budget, likely serving as a lure to encourage users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://midufefew.ru/award?keyword=chhattisgarh+budget+2020+19+in+english+pdf PDF link annotation
    • https://sedezexe.weebly.com/uploads/1/3/4/3/134342112/tevubozezupozag.pdfIn PDF document text
    • https://penizamuravepu.weebly.com/uploads/1/3/5/9/135976181/282983.pdfIn PDF document text
    • https://bujubemido.weebly.com/uploads/1/3/0/7/130776032/262263.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/jXlytjf/16_personalities_defender_strengths_and_weaknesses.pdfIn PDF document text
    • https://rurusoweloxefug.weebly.com/uploads/1/3/3/9/133989150/f8bd0a691edca.pdfIn PDF document text
    • https://cdn.sqhk.co/redixebu/ic8i5gg/cute_love_story_facebook_video.pdfIn PDF document text
    • https://cdn.sqhk.co/gamakokub/elhgYhg/99141419798.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/eiauhcQ/nokekokevibitexojoxeg.pdfIn PDF document text
    • https://gisijenoxumo.weebly.com/uploads/1/3/1/4/131437849/9071464.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/3V4TFgh/ramp_car_jumping_gameplay.pdfIn PDF document text
    • https://bunavomotuta.weebly.com/uploads/1/3/4/6/134606544/mugev_galiloleviwuned_zodisi_suderixa.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/PjesVge/goxivuguvanagopibeze.pdfIn PDF document text
    • https://cdn.sqhk.co/vavetiset/aichcWc/kipiwujunebu.pdfIn PDF document text
    • https://webuxeneme.weebly.com/uploads/1/3/4/3/134368634/bitamogik.pdfIn PDF document text
    • https://negazebofukiwan.weebly.com/uploads/1/3/5/3/135318678/7355992.pdfIn PDF document text
    • https://rigavimiba.weebly.com/uploads/1/3/0/8/130814992/pesaxubidawike.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/kadatijaguxamiper.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/U3VnPZr/swing_states_in_the_us_polls.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satanira.rf.gd/sezakifevimudozumubodud.pdfIn PDF document text
    • http://xagewojijakeri.rf.gd/incorporated_business_tax_forms.pdfIn PDF document text
    • http://lemujiv.epizy.com/lanovupetuju.pdfIn PDF document text
    • http://gagonunanu.epizy.com/39926051668.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/suboccipital_craniectomy_for_chiari_malformation.pdfIn PDF document text
    • http://weridujesuta.epizy.com/customer_journey_template_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/gulomopu.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_off0000efb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB0 5828 bytes
SHA-256: 6c665e9feb672f02f1b3434669759e09e44b0f570e645d7df5a148df9d1c7de4
font_01_sfnt_off00010375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10375 10320 bytes
SHA-256: 3e1308e6c80dea4950ad524f82a96ce454a13f881c9784f033e7029db47c6ab5