PDF malware analysis — malicious · b296a741425a8681

MALICIOUS

PDF

80.3 KB Created: 2021-04-01 06:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02

MD5: 837fd819ddae9efe61c866cef897a069 SHA-1: eb89324476de07fc928d06ffa8ddf8e55868ac98 SHA-256: b296a741425a86818e85efa6f74810c07ce08ee670d27b58492d472621833ab3

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, with ClamAV identifying it as a phishing trojan. The file contains numerous embedded URLs, with at least one pointing to a suspicious domain ('resalured.ru') that is likely used for phishing or malware distribution. The presence of these links suggests an attempt to redirect the user to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://resalured.ru/strik?utm_term=accu-chek+performa+connect+app PDF link annotation
- http://lovelyhouse.online/mezuxamekesezazebaxersxtg.pdfIn PDF document text
- https://cdn.sqhk.co/fowipovoji/DCFijjc/city_car_driving_gameplay_pc_download.pdfIn PDF document text
- https://cdn.sqhk.co/suxujaba/ggrORLl/lucky_car_dealership_monticello_ar.pdfIn PDF document text
- https://cdn.sqhk.co/sujoxeti/hhcrjiD/21289137405.pdfIn PDF document text
- https://cdn.sqhk.co/lisakopew/gdzgc0z/twisted_wonderland_malleus_chat.pdfIn PDF document text
- http://f1l3download.site/rupifuxudofunuvakufakikud150s0.pdfIn PDF document text
- https://cdn.sqhk.co/wefegiwezon/hMt0Ljj/tamilrockers_1080p_tamil_dubbed_movie.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/3c12154a-3cef-476d-991f-9d6a9fd9065d/briggs_and_stratton_vanguard_18hp_manual.pdfIn PDF document text
- http://gavigepovu.epizy.com/5979365002.pdfIn PDF document text
- https://da9d63b4-fbfd-4f6f-88e7-06ac0d76355b.filesusr.com/ugd/ca300b_8550990a882046e7b66056c8430b7a18.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/e24a4689-f556-4037-911e-d84f6e82610d/suzozofedogaxazufojufov.pdfIn PDF document text
- https://s3.amazonaws.com/falevi/xopugudoparadoruzubiza.pdfIn PDF document text
- http://tizivedimusos.epizy.com/beautiful_in_white_westlife.pdfIn PDF document text
- https://f43304fd-85e4-489a-8612-81977e01be4a.filesusr.com/ugd/b6f504_68fd3aad731a4fd88819b34589c8cb55.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/davawina/google_chrome_terbaru_offline_filehippo.pdfIn PDF document text
- https://f395d2f2-f939-483b-815f-81062d4747ff.filesusr.com/ugd/be2697_354b8914288f45989408c6cc4f54a8d4.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/sefipa/xugojefexaveser.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a3ca36e1-dcd8-4585-83bb-b45e20d9678a/60106491748.pdfIn PDF document text
- http://nabasuxogakuwet.epizy.com/spoken_english_tutorial_for_beginners.pdfIn PDF document text
- http://zunebafovako.epizy.com/pedar.pdfIn PDF document text
- https://s3.amazonaws.com/lakadutof/meant_to_be_yours_sheet_music.pdfIn PDF document text
- https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_e9599c20b3dd497390f757869cd30560.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/remuv/42938429456.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_off0000ec19.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC19	4964 bytes
SHA-256: `f09a9b01fa6022a5e0453beba39f958d60b0bce36eeddcf1d2d8685ea4fb723a`
`font_01_sfnt_off0000fcd2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCD2	13008 bytes
SHA-256: `c4352ba05402984dcadd853f3d9dd51639d26a88ab49c9c44db7092cdc8d2229`
`font_02_sfnt_off000125b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125B3	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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