PDF malware analysis — malicious · 45aea060f54db2af

MALICIOUS

PDF

73.5 KB Created: 2021-05-26 07:26:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 47e48d6674fde470a4d6836cd09555f9 SHA-1: 2f45d967251266ecc7907916f2e6c7b901343e72 SHA-256: 45aea060f54db2af52271e43882b44bb55c8855ce70365f229fb8ac342d57492

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and potentially phishing-related. It contains a large number of external links, many of which point to benign resources, but one suspicious URL, 'https://jumiwimov.ru/strik?utm_term=naruto+path+of+the+ninja+3+romsmania', is present and likely serves as the primary lure. The document body is heavily obfuscated and appears to contain junk data, suggesting an attempt to hide malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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 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://jumiwimov.ru/strik?utm_term=naruto+path+of+the+ninja+3+romsmania PDF link annotation
- https://ripaduwik.weebly.com/uploads/1/3/5/3/135311581/lugutur.pdfIn PDF document text
- https://sepiximefajo.weebly.com/uploads/1/3/4/8/134849953/9f1e5c606a.pdfIn PDF document text
- https://dufurewamefo.weebly.com/uploads/1/3/4/5/134595550/pelaware.pdfIn PDF document text
- https://lifowedo.weebly.com/uploads/1/3/4/7/134707215/8204a1c5.pdfIn PDF document text
- https://doxifivot.weebly.com/uploads/1/3/4/2/134235468/xifimopuzumawadubur.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
- https://uploads.strikinglycdn.com/files/afc2e086-ea46-409a-aae4-031df7675059/40529267714.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/56e54530-6c34-4052-b7d8-1fb92c61f502/disenujasirilagunirekati.pdfIn PDF document text
- https://s3.amazonaws.com/sogovekevi/focusrite_scarlett_2i2_gen_2_studio_pack.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4eb7c050-a9f6-418a-9774-b0cc2b9a21bb/morris_micklewhite_and_the_tangerine_dress_lesson_plan.pdfIn PDF document text
- https://s3.amazonaws.com/bifadiwuwileji/59462818031.pdfIn PDF document text
- https://s3.amazonaws.com/dovulavavo/quiznos_nutritional_information_canada.pdfIn PDF document text
- https://s3.amazonaws.com/desenaz/ragnarok_mobile_acolyte_build_guide.pdfIn PDF document text
- https://s3.amazonaws.com/timeziso/receipt_template_uk_word_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/27edbfe1-3844-45b4-88db-c4dcdb9d4740/printable_maths_worksheets_for_7_year_olds_uk.pdfIn PDF document text
- https://s3.amazonaws.com/zozuxukoxo/what_does_landscape_mean_on_iphone_x.pdfIn PDF document text
- https://s3.amazonaws.com/dewutexorob/cheap_long_formal_dresses_near_me.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc197bf9-9816-4241-95f9-981dd688575c/puxasaxoxusivisavo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1c17cbc-ef4e-47ac-86ef-96dd43df2d3a/florida_algebra_1_eoc_online_practice_test_answers.pdfIn PDF document text
- https://s3.amazonaws.com/temujonuwu/25283793132.pdfIn PDF document text
- https://s3.amazonaws.com/nunakixuma/logo_maker_app_for_pc.pdfIn PDF document text
- https://s3.amazonaws.com/xutomoxu/39663399703.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d7baf6c-b7d8-4de3-b346-fce00371fcd4/linear_algebra_and_its_applications_strang_5th_edition.pdfIn PDF document text
- https://s3.amazonaws.com/ritoma/is_elgato_worth_it.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d292.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD292	5200 bytes
SHA-256: `d02b1128be5f615ad9a56c44d75826c9a33de8ef162f4880863c46aabb0b52f2`
`font_01_sfnt_off0000e41c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE41C	11288 bytes
SHA-256: `0c0a7e99e40946225429bfc1173a2a5e911d6d846c48bc9bef1c56f4226915c5`
`font_02_sfnt_off00010a47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A47	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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