Malicious PDF — malware analysis report

Static analysis result for SHA-256 3918e419609ab338…

MALICIOUS

PDF

111.7 KB Created: 2021-03-16 02:54:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c94d8bf462cb26fa7d44bf66fbfa9532 SHA-1: 579a16e632267073ca6bd4cc1825775063d5ee36 SHA-256: 3918e419609ab338c3b2aa3b6d4b1a65c7d727d1b160507d7e4e573043277117
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://midufefew.ru/strik?utm_term=that+sounds+great+meaning+in+urdu PDF link annotation
    • http://muzesumulel.getenjoyment.net/reconstructing_native_american_population_history.pdfIn PDF document text
    • http://gejokakop.mygamesonline.org/bearing_number_identification.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/roland_td-11kv_drum_set.pdfIn PDF document text
    • http://wadutijop.iblogger.org/67307987616.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/jjvlkIH/begegumopuzofigizas.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/jieicPd/advertising_agency_definition_example.pdfIn PDF document text
    • http://wuwetinaj.22web.org/gilukasaziposozorijore.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/hgzhiib/gezepesa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b07fc24-2707-4c1a-8ffb-318f22872fa3/what_can_i_do_with_a_degree_in_media_and_communications.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/faledivo.pdfIn PDF document text
    • https://d8ec88ce-93b1-4b83-b294-7016fd5b5063.filesusr.com/ugd/366252_5ba431e412e240c696db6e1d9e8da1df.pdf?index=trueIn PDF document text
    • http://tewaremiluzavag.rf.gd/how_to_replace_ge_dryer_timer.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/febad.pdfIn PDF document text
    • http://xoxadexol.rf.gd/3214177541.pdfIn PDF document text
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_75170e43949f4d08bb3879ffb482bb3e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/88305010077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f946c0c-3aa9-4e9e-96c6-a2c5a27cd73a/17028043881.pdfIn PDF document text
    • http://jekurur.atwebpages.com/a_1240ss_as.pdfIn PDF document text
    • https://ecf8b3bd-8201-449f-a39c-156acd88681e.filesusr.com/ugd/97634b_f73119730168417f8294a64353233626.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off0001745a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1745A 25436 bytes
SHA-256: 161dd3206360d1c506c12013f3316a5f5e6089419fb8afc9dc1add2b325e9d38
font_00_sfnt_off0000ef23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF23 5684 bytes
SHA-256: caeed39893b82969c26dfcac95946a3fad4fbae0765b3ea81aa15456cfe783a6
font_01_sfnt_off000102fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FE 5156 bytes
SHA-256: f3844036d4de3e1b0ec8611fb3e21fb252b32c5b086c030f6eb35e8706a780ac
font_02_sfnt_off00011457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11457 2656 bytes
SHA-256: 1620336da6018abf771a3b64a4739dbc5cc5761e5bcfd31f9568e9163b5e6178
font_03_sfnt_off00011f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5E 2328 bytes
SHA-256: 6d897259d7ab9db79b0dbb16904cd99ff486aa7f4a475590a5d3e44eab6e0eed
font_04_sfnt_off00012a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A14 2108 bytes
SHA-256: b3976ad28991401f3a7e0d936621f3963ed8fd81aff5bedc9e25cf6548b1959b
font_05_sfnt_off000133df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133DF 6640 bytes
SHA-256: c8cb303e765c67f43d6d34f29c1d02953890772ff7b697be779fb29335000f72
font_06_sfnt_off0001457e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1457E 15332 bytes
SHA-256: 9bdff7284a5fe839c32460c302f5d7f778f05946c5bbb3315eb85a7736e55ef8
font_08_sfnt_off0001a1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A1B6 3276 bytes
SHA-256: 333cf0bae5291019b79d77a37696b89786718dc77a0e6f1c7356514a48765311

Open this report in the interactive analyzer, or submit your own file for analysis.