PDF malware analysis — malicious · 5ffbe1b45844d9d8

MALICIOUS

PDF

90.2 KB Created: 2021-03-19 19:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 5e29b1708756baaefa1235b1916ddd7b SHA-1: b62c7620cbf77fde8c878348f2ee62a093fa1a3e SHA-256: 5ffbe1b45844d9d831f73cc166c41ddd091aafa1f5f254164285fa7adc710bef

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable hosting services, and is identified as a link farm. The presence of external URIs and the nature of the heuristics suggest the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://druttle.ru/123?utm_term=mx+player++apkpure PDF link annotation
- https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/zozis-vegutodavipes-menaladu-jugemuw.pdfIn PDF document text
- https://galewijukinez.weebly.com/uploads/1/3/2/6/132695540/bolidoxewukemuju.pdfIn PDF document text
- http://wodekenizowa.getenjoyment.net/becoming_familiar_with_lab_equipment_worksheet_answer_key.pdfIn PDF document text
- https://megidawuxuta.weebly.com/uploads/1/3/4/7/134729580/2142657.pdfIn PDF document text
- http://bubuwem.iblogger.org/human_trafficking_in_the_united_states_2018_statistics.pdfIn PDF document text
- https://xumusozopojuvuj.weebly.com/uploads/1/3/1/3/131398507/pixiro_dokiwuzuwugewoj_fofuj.pdfIn PDF document text
- http://nijeratazuw.iblogger.org/nse_live_chart_software_free.pdfIn PDF document text
- http://resokipuga.getenjoyment.net/ancient_world_history.pdfIn PDF document text
- https://vidiguwases.weebly.com/uploads/1/3/4/3/134347373/41e3a74633505.pdfIn PDF document text
- https://gumakini.weebly.com/uploads/1/3/1/4/131414358/dadigure.pdfIn PDF document text
- https://pekudexuvu.weebly.com/uploads/1/3/1/4/131437333/lanafarezikuf.pdfIn PDF document text
- http://xuvavarapegu.mywebcommunity.org/pimamubilekav.pdfIn PDF document text
- https://lelopotive.weebly.com/uploads/1/3/0/7/130738546/wunixejozisikis.pdfIn PDF document text
- http://zuzitijimopa.22web.org/32070662132.pdfIn PDF document text
- https://gikigafe.weebly.com/uploads/1/3/4/4/134440869/lemosisemisik.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://wumafopid.onlinewebshop.net/public_policy_in_australia_theory_and_practice.pdfIn PDF document text
- https://s3.amazonaws.com/xonaxevetaf/nugurowemidimebosujeg.pdfIn PDF document text
- https://s3.amazonaws.com/waxegatulo/casio_3240_w-800h_manual.pdfIn PDF document text
- https://s3.amazonaws.com/jezekemunidup/muxulaputovireju.pdfIn PDF document text
- https://s3.amazonaws.com/wizitifowubux/74038295957.pdfIn PDF document text
- https://s3.amazonaws.com/werowibovezoje/43114322368.pdfIn PDF document text
- http://kojuvubij.rf.gd/dj_remix_bass_songs_free.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f4d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4D3	2900 bytes
SHA-256: `7b4a49995b7dd69d4afe5ee3eee77951727d25d484e62cc4016f8f5b91e0b297`
`font_01_sfnt_off0000ff25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF25	4872 bytes
SHA-256: `77677296507c5464bf0c30d51ddf052182310c09a9def25d886f3bd0bbc5598c`
`font_02_sfnt_off00010fdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10FDF	17400 bytes
SHA-256: `6186bd40109fdcbaeecad668bffa6828ad6d856d14092d9c3e8fe54a520958d3`
`font_03_sfnt_off0001458c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1458C	16344 bytes
SHA-256: `3745d395dffe053ce12bb6e6d543a89fda750690c61e1e786fb35984b58e44e5`

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