Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d9093f82e1b3a2…

MALICIOUS

PDF

87.8 KB Created: 2021-04-30 03:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e47c086c368803ddb96604a7657c3050 SHA-1: 5a5f8dd62576b2b6a7c4459c19f1627b7f63eb56 SHA-256: 22d9093f82e1b3a2b991d0d66a4a709931482ee4396bc1899467f6a68e541107
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 0.9995

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://golowaki.ru/strik?utm_term=traxxas+summit+1%252F10+mods PDF link annotation
    • http://fejiximodanu.mygamesonline.org/bbc_compacta_class_11_english_answers.pdfIn PDF document text
    • http://zusagukitu.mywebcommunity.org/vapixogafoj.pdfIn PDF document text
    • http://derifupiwa.mypressonline.com/komplikasi_bronkitis_akut.pdfIn PDF document text
    • https://lovebaxubifutu.weebly.com/uploads/1/3/4/3/134322000/voluvu.pdfIn PDF document text
    • http://rekusigixebisuk.22web.org/50611072347.pdfIn PDF document text
    • https://lobovalosidim.weebly.com/uploads/1/3/1/4/131437181/supipofa.pdfIn PDF document text
    • https://disaximineta.weebly.com/uploads/1/3/4/8/134883765/faxusok_repog_juvudanazesixu_lozamegugiti.pdfIn PDF document text
    • https://viwosakizipisot.weebly.com/uploads/1/3/5/3/135321869/7e700c7c.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/potiximexetu-xigusiw-roxanup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9505ca4c-dfdc-4941-8fde-ded35496d0c9.filesusr.com/ugd/2097ab_1445a8adeaba43e0aee9884d50f8fe1d.pdf?index=trueIn PDF document text
    • http://tanijug.rf.gd/how_do_you_fix_a_jammed_fellowes_shredder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff9441dd-7471-41ab-93ba-5c93b1f7dbd3/nebiginogolotomiwopo.pdfIn PDF document text
    • http://josisuvo.epizy.com/xeruzulevaxulupuv.pdfIn PDF document text
    • https://a49ec80b-b4e3-4dac-84ed-d687b6aff6a5.filesusr.com/ugd/46d696_2eb5830c46e04c0fa686bc145b6f84b8.pdf?index=trueIn PDF document text
    • http://kuvuzoruzanawip.epizy.com/votata.pdfIn PDF document text
    • https://c779a0a5-5a96-4308-8c37-720837e0bdd2.filesusr.com/ugd/4f1d02_b2e4c873236a431792509c59b3af4808.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ba0539f-f077-4966-bfc0-3b6aeac605cd/how_to_connect_hp_officejet_6700_to_wifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e7f96fb-2b7c-48b0-9866-eaf5c9d6feb1/donanul.pdfIn PDF document text
    • http://wizasagi.rf.gd/los_crmenes_de_la_calle_morgue_sinopsis.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/mozosevuxi.pdfIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_cba6945839044c3da7183eca62b8bcd4.pdf?index=trueIn PDF document text
    • http://totepotolijezib.rf.gd/boy_baby_names_in_tamil_free_download.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D34 5184 bytes
SHA-256: 57c825fd4878cd2492c9adb2cb167019fe7b268514979cad5c8eaea2b66b5bbb
font_01_sfnt_off00012ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ECC 10288 bytes
SHA-256: 492cb35c8e933b30ed6b507b53257ee6a488acb117b773ad2cc0d9cc52a0b2e7

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