Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a4560c0becb115…

MALICIOUS

PDF

72.0 KB Created: 2021-01-18 05:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0ff0045dd04e717b5c8afb657b31263d SHA-1: d573c5a76b58913836f7e5680da79940100bd71d SHA-256: 69a4560c0becb115c285c05311679dc0fd43138d3d333c946b45bcf90c6443c4
184 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a redirector and a link farm. The document contains numerous embedded URLs, with at least one pointing to known malicious infrastructure. The presence of these links suggests the primary purpose is to lure users into clicking them, likely leading to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=python+iterate+over+list+of+tuples In PDF document text
    • https://kukonugaxa.weebly.com/uploads/1/3/5/3/135327287/7184548.pdfIn PDF document text
    • https://site-1171498.mozfiles.com/files/1171498/kowototaluz.pdfIn PDF document text
    • http://zepawagir.iblogger.org/jurassic_world_alive_mod_apk.pdfIn PDF document text
    • https://jarofuzaduse.weebly.com/uploads/1/3/4/5/134502270/6575549.pdfIn PDF document text
    • https://site-1199244.mozfiles.com/files/1199244/43226731183.pdfIn PDF document text
    • https://site-1174531.mozfiles.com/files/1174531/wububurixivazituzuvuki.pdfIn PDF document text
    • https://site-1173632.mozfiles.com/files/1173632/ximavovexenimonebisi.pdfIn PDF document text
    • https://fuzanageguv.weebly.com/uploads/1/3/5/3/135305388/xovav.pdfIn PDF document text
    • http://limevekobo.iblogger.org/73958183410.pdfIn PDF document text
    • https://vusukiziroge.weebly.com/uploads/1/3/0/9/130969505/1272110.pdfIn PDF document text
    • http://xilagima.66ghz.com/reservation_form_train_ticket.pdfIn PDF document text
    • https://rijumiwotoresu.weebly.com/uploads/1/3/4/4/134490354/a06b8bf.pdfIn PDF document text
    • https://fomezesas.weebly.com/uploads/1/3/4/3/134343882/8581015.pdfIn PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/lanezo_xusuxuguwikati_raroviz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mukokulag.epizy.com/word_2016_calendar_template_2020.pdfIn PDF document text
    • http://serudijukidat.epizy.com/automation_studio_5_library_files.pdfIn PDF document text
    • http://relurifiluxel.epizy.com/32830850365.pdfIn PDF document text
    • http://rimalapotozuf.epizy.com/melurubefixewimalegez.pdfIn PDF document text
    • http://jofesowevelen.epizy.com/car_engine_parts_diagram.pdfIn PDF document text
    • http://segigeserife.epizy.com/libagixirimufifofuvo.pdfIn PDF document text
    • http://xafamikipu.epizy.com/arduino_mega_adk_rev3_pour_android.pdfIn PDF document text
    • http://pelubameta.epizy.com/lotetegagizipamebawi.pdfIn PDF document text
    • http://xepalufozakot.epizy.com/83784862989.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_off0000db56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB56 5152 bytes
SHA-256: 85839a7217dd2b915a2e1466e10afb9b20d210718377c58a08b40750b5ebc68b
font_01_sfnt_off0000ece7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE7 10924 bytes
SHA-256: 5575139c2e86bc97c73487df548f7ca3278a7a75c700012c59c90a87143b63f1

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