Malicious PDF — malware analysis report

Static analysis result for SHA-256 f584e5859cc5b741…

MALICIOUS

PDF

81.1 KB Created: 2021-03-23 14:06:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1bfd80c92e8e362303b7e5d15dd0736b SHA-1: 521aab64fa8ccfc8830bc947765b42bf8b71b255 SHA-256: f584e5859cc5b7413fdd738cb6e182593b8ac80c19973f4667b58ed5d477a7e0
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 0.9997

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://bologen.ru/strik?utm_term=para+que+nos+sirve+una+linea+del+tiempo PDF link annotation
    • http://tejidirexe.mywebcommunity.org/fapilokipugevanulux.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/purisomedolepopatu.pdfIn PDF document text
    • http://pubggaming.online/88414225077wq0q3.pdfIn PDF document text
    • https://fogoranamixite.weebly.com/uploads/1/3/5/3/135390362/171754.pdfIn PDF document text
    • https://zugufirit.weebly.com/uploads/1/3/1/1/131163535/da85dc8.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/garmin_gps_12_manuale_italianoxnsc1.pdfIn PDF document text
    • http://huseyincanx.com/786500814300i6yy.pdfIn PDF document text
    • https://sinupumu.weebly.com/uploads/1/3/4/8/134893056/adbefcb99fde9.pdfIn PDF document text
    • https://dupukaradox.weebly.com/uploads/1/3/6/0/136015529/4492096.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://zoxuwabemowel.epizy.com/tozejedubinukenole.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/tulufijagivoxazol.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/windows_activator_win_10_bagas31.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad6e0fc-3478-4bfe-a684-c626798f7411/15073459745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c0a93e-6230-4277-a6d1-85e365b79e68/a_link_to_the_past_remake_switch_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf54ec8a-50e7-4f06-8fa0-a54c946fbe32/how_do_i_love_thee_holland.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58b4bdb8-81ce-4e28-8d69-5627f5ffd187/rikuxufivonokojawunozoz.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/facebook_cover_photo_photoshop_template_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/nozisopifeletojidevuzugu.pdfIn PDF document text
    • http://misibinebob.epizy.com/horses_daryl_braithwaite_sheet_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d6b671d-4527-4029-983e-9a6b2c032d39/15326316302.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB3 5176 bytes
SHA-256: 94072f5210a75e9e9a295ed09b34dd30180a3ce8762b7f35a78d0bce33339b06
font_01_sfnt_off00010130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10130 11728 bytes
SHA-256: 2482b8ea26f3de3ba5a6d68f4a7ef75ee63c7ad88208ec57caf156e81e145e39
font_02_sfnt_off0001273c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1273C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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