Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e82f869c8bf4cd3…

MALICIOUS

PDF

95.1 KB Created: 2021-05-03 06:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 99728c52b18de47c86450fee1c7a99a9 SHA-1: 9cc7fab53cdca5952ecedd61285fdc25dd32a5bd SHA-256: 6e82f869c8bf4cd387461d36e00e4634dbc61c5dd5be55b8a9d4d90604ddd266
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://xezojetit.ru/strik?utm_term=verbos+en+ingles+y+espa%25C3%25B1ol+los+mas+usados PDF link annotation
    • https://lumejukotexute.weebly.com/uploads/1/3/1/1/131163930/565c6aed.pdfIn PDF document text
    • https://rokerisokexojud.weebly.com/uploads/1/3/0/7/130738924/bigewofujemojut.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/hdPjcd5/12066360720.pdfIn PDF document text
    • https://manadazalivufud.weebly.com/uploads/1/3/4/3/134358645/12833cf0f975f5c.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/aDZwr9Y/37652758456.pdfIn PDF document text
    • https://dirusase.weebly.com/uploads/1/3/1/0/131070798/5139129.pdfIn PDF document text
    • https://zimegusak.weebly.com/uploads/1/3/4/6/134605775/0fbd816.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/iejiiwm/7200041701.pdfIn PDF document text
    • https://nixoferijoxe.weebly.com/uploads/1/3/4/3/134373865/17eab8.pdfIn PDF document text
    • https://cdn.sqhk.co/jojipimuve/jhGqhiZ/5907591157.pdfIn PDF document text
    • https://tulopudegiwidal.weebly.com/uploads/1/3/0/7/130739196/kanovaxu.pdfIn PDF document text
    • http://jawogili.22web.org/73328112613.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/hiiDjja/gemugogemubozapigo.pdfIn PDF document text
    • https://rusigeju.weebly.com/uploads/1/3/4/5/134596119/2869746.pdfIn PDF document text
    • https://pogunokele.weebly.com/uploads/1/3/0/7/130739789/e99fd0ec.pdfIn PDF document text
    • https://kosilamegorigi.weebly.com/uploads/1/3/1/4/131409210/7620625.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupovedifa.rf.gd/android_studio_mac_jdk_location.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/mi_band_4_amazon_answers_today.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/nazim_hikmet_siir_ask.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/parejupawulijod.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/tanuvubupuzilawi.pdfIn PDF document text
    • http://nidudovuj.epizy.com/braun_thermoscan_lens_filters.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/lafawabebemabumadukokob.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/abiogenesis_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/88491683904.pdfIn PDF document text
    • http://xofafatererowu.rf.gd/48622426459.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/t-fal_triple_basket_deep_fryer_4l.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/73910931345.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12597 5696 bytes
SHA-256: 882a5e215253a5f816e667026fd46af5a4bc11ac9bf0538bd15561ff74331d3a
font_01_sfnt_off00013895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13895 4440 bytes
SHA-256: c068a8e55fa75ffd6bf2a2a09698f551a0c0f804cd92eb2fef9741fb3c05b768
font_02_sfnt_off0001447c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1447C 12132 bytes
SHA-256: 300943e1424da553d2cb17dfd03d07a9bb7aa1f710161a13026a616dccfc2c2a

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