Malicious PDF — malware analysis report

Static analysis result for SHA-256 012730e3f928e5cc…

MALICIOUS

PDF

75.0 KB Created: 2021-01-22 07:15:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c33f05587b0eb11a41f80fcdf044564d SHA-1: 54503ffa4c639ae3a5ec2958f0a65b047e1d9608 SHA-256: 012730e3f928e5cc9ad6364a0233050782c77149863871d9eedd7a791258ca82
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan distribution. It contains numerous external URLs, many of which are hosted on disposable domains or link farms, suggesting an attempt to redirect users to malicious content. The ML classifier output of 0.999785 indicates a very high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafficel.ru/aws?utm_term=game+avatar+musik+pc PDF link annotation
    • https://cdn.sqhk.co/jawuraxexije/bshat13/ark_survival_evolved_cheats_xbox_one_list.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/T4ggkDf/werifefufigoxel.pdfIn PDF document text
    • https://pozemake.weebly.com/uploads/1/3/0/7/130776760/jazaseduvinu.pdfIn PDF document text
    • https://site-1230430.mozfiles.com/files/1230430/82935971622.pdfIn PDF document text
    • https://site-1177365.mozfiles.com/files/1177365/33523982598.pdfIn PDF document text
    • https://lirurarupo.weebly.com/uploads/1/3/4/7/134770738/1657696.pdfIn PDF document text
    • https://zowomotoridaxa.weebly.com/uploads/1/3/1/4/131438570/xutuzozuw_livasonakutava.pdfIn PDF document text
    • https://cdn.sqhk.co/sakixowofeg/Qqgheja/slackline_obstacle_course.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxinugokas/hfgjxjc/18570154722.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/2jcifKs/witcher_3_where_to_craft_mastercrafted_swords.pdfIn PDF document text
    • https://cdn.sqhk.co/xejokenu/r3Bjijw/5137343342.pdfIn PDF document text
    • http://netusikofigo.22web.org/vazazaliledivabubazarito.pdfIn PDF document text
    • https://cdn.sqhk.co/lewovazu/7p9ghig/nozexenugovodaju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dasujisetojasel.epizy.com/xadosikixo.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/block_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/california_single_member_llc_operating_agreement_template.pdfIn PDF document text
    • http://wapowidomuf.epizy.com/ireport_5._6_0_64_bit.pdfIn PDF document text
    • http://jigigapapidafe.epizy.com/39991969941.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/counterfeit_goods_act_37_of_1997.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A3 5204 bytes
SHA-256: 0922af66f49c5e692ff0868f10adba73735e966c90327c912dbbff3bbee375f0
font_01_sfnt_off0000fb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4E 10428 bytes
SHA-256: 1f8d4e65a47021b6cf5191c086e662d3956e373013c88efc0103981a5b4c6ef4

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