PDF malware analysis — malicious · 01159f5f8f7d4763

MALICIOUS

PDF

94.8 KB Created: 2021-03-20 16:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: ba1c8592a4d85f08334b4418ddcbdbec SHA-1: 61f7caf3f5860ff7925e600de7f3338e3991d005 SHA-256: 01159f5f8f7d4763f3f15e91c0333207469ca4edecf7f571585e56f2248242e5

66 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs and is flagged by ML classifiers as malicious. The document body, though partially corrupted, suggests a lure related to 'what to pack for school lunch for picky eaters' which is likely a social engineering tactic. The presence of multiple external URIs, including those on disposable hosting, indicates an attempt to redirect the user to malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9986

Heuristics 4

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://dugedepap.ru/strik?utm_term=what+to+pack+for+school+lunch+for+picky+eaters PDF link annotation
- http://fekedusotuxena.iblogger.org/ancient_egypt_an_illustrated_history.pdfIn PDF document text
- http://vadonodip.22web.org/hamilton_beach_steam_excel_iron_manual.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424330/normal_603ea82e4c838.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414339/normal_5ff35e568199b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370299/normal_6005219901835.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483867/normal_5ffdf0ef87699.pdfIn PDF document text
- http://voxamuzovo.22web.org/autothermal_reforming_and_steam_reforming.pdfIn PDF document text
- http://lifipumajetug.22web.org/best_differential_calculus_book.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499995/normal_600d794fa96e8.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://tananij.rf.gd/chronicles_of_narnia_books_reading_level.pdfIn PDF document text
- http://lakugarim.rf.gd/mexijajovarobokerizesuvo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ad11a1f1-737f-4419-823e-32f90d2bff39/pikaririwokepededanajew.pdfIn PDF document text
- http://risewoririti.epizy.com/elementos_de_los_actos_de_comercio.pdfIn PDF document text
- http://sodebaxekigefip.rf.gd/starbucks_corporate_social_responsibility_report_2018.pdfIn PDF document text
- http://xizokokov.epizy.com/gipujowofufatekujen.pdfIn PDF document text
- http://zewilamijalu.rf.gd/how_do_float_level_switches_work.pdfIn PDF document text
- http://defizal.epizy.com/wavasipalusiwopiwujidu.pdfIn PDF document text
- http://riremeg.rf.gd/how_to_use_a_metric_scale_ruler_on_drawings.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f2df67ec-cf92-473c-961c-452a2aad459c/lilenizasokokekerirap.pdfIn PDF document text
- http://jejijumebiv.epizy.com/dieta_arnold_schwarzenegger.pdfIn PDF document text
- http://sidigoxe.rf.gd/citizen_nighthawk_bj7000-52e.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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000104e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104E5	5164 bytes
SHA-256: `ed40badee36956ea72187a2eb51ac0901b20c7f07fed6d7d54e4c559b2fa42ed`
`font_01_sfnt_off00011676.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11676	2344 bytes
SHA-256: `3710f46d2f908ede9c06af5dbb255e08808dbbafc4bec95595eaa4b3b3bd2136`
`font_02_sfnt_off000120df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x120DF	11460 bytes
SHA-256: `47dd2b5c7ba149dd1cd1b6809feaaa256f8fd6b51e45835a0d37a586c8ddd318`
`font_03_sfnt_off0001481e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1481E	16588 bytes
SHA-256: `b83ff08cdbc49e7cfef8cbe45843382833facc0e05e545e08fb7eca07dec9369`
`font_04_sfnt_off00015e37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15E37	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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