PDF malware analysis — malicious · 4fa3e38bf228d61b

MALICIOUS

PDF

102.6 KB Created: 2021-05-03 16:35:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: bb269a1379690bd99c8ae7cc8d0444e2 SHA-1: 7b9ebd2320821100a0590bec07d1a97dd4ed76d0 SHA-256: 4fa3e38bf228d61bd492051ef36f291b0232ee01dcfd1290916505b9ddee1815

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, contains a title related to resetting a security key, suggesting a pretext for a phishing or malware lure. The presence of multiple PDF_URI heuristics and a high ML score indicates a strong likelihood of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

Heuristics 6

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://lozipotod.ru/strik?utm_term=how+to+reset+security+key+on+a+stealth+cam PDF link annotation
- http://xsafak.com/foxit_reader_word_converter_free_downloadqaj7k.pdfIn PDF document text
- http://wabesiguz.22web.org/how_to_replace_lid_switch_on_kenmore_stackable_washer.pdfIn PDF document text
- http://tazizinujumijoj.mywebcommunity.org/55061179177.pdfIn PDF document text
- http://artrosil.xyz/simple_definition_of_technology0y0qg.pdfIn PDF document text
- http://pegijegur.mygamesonline.org/templates_and_exception_handling_in_c.pdfIn PDF document text
- http://decideyouself.fun/zuxenizipor56ech.pdfIn PDF document text
- http://de-bewertung-id-q2e5t23.top/salunjxphi.pdfIn PDF document text
- http://f1l3download.site/69498549514c3tn0.pdfIn PDF document text
- http://shoppingyxplus.xyz/photoshop_creative_cloud_macgdt0k.pdfIn PDF document text
- http://tujemet.scienceontheweb.net/spanish_grammar_drive.pdfIn PDF document text
- http://artrosil.xyz/future_tense_worksheets_for_grade_4pcywi.pdfIn PDF document text
- http://hytri.com/crkt_operation_iraqi_freedom_knife_m16-14d7u5gp.pdfIn PDF document text
- http://oyuncuxx.com/how_to_adjust_resistance_on_cycleops_mag_trainer3c7ic.pdfIn PDF document text
- http://lnstagram-help-businesss.com/daneguvoxop8gsfe.pdfIn PDF document text
- http://flipping-car.online/marketing_plan_sample_powerpointmx5g8.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://kixixiwibatogit.epizy.com/airserver_cracked_mac.pdfIn PDF document text
- http://guxejusoselota.myartsonline.com/12th_class_biology_objective_questions.pdfIn PDF document text
- http://sukepavudopuje.epizy.com/doterra_probiotics_jr.pdfIn PDF document text
- http://refewededuxita.epizy.com/nikipanaxemolakudepajijen.pdfIn PDF document text
- http://zerujafulo.rf.gd/xununurozoso.pdfIn PDF document text
- http://modedavap.epizy.com/96103173733.pdfIn PDF document text
- http://rowoniwetob.atwebpages.com/vba_coding_tutorial_excel.pdfIn PDF document text
- http://faxiwig.epizy.com/sowufojibogarudigida.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00013dc1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13DC1	5260 bytes
SHA-256: `7c572b703fbce79ec1656cac793eeef1748e32d739ce5760b444c28702e81795`
`font_01_sfnt_off00014f8d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14F8D	11808 bytes
SHA-256: `dcb027ca0d575ba6caff0b049a78fa3bebd649b3b6e5c656fc5b152af18f6452`
`font_02_sfnt_off00017811.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17811	16060 bytes
SHA-256: `d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7`

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