Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5838aaeb0e85cc…

MALICIOUS

PDF

83.8 KB Created: 2021-03-22 18:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0e57c8eed99bb5217e7668ee74709062 SHA-1: 734ffc22378c0738d8ed165c502cbd7451767508 SHA-256: 9e5838aaeb0e85ccc4e6297f884e764b189df082c6179e2cf5668ad4cacb629c
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 0.9996

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://lozipotod.ru/123?utm_term=aplicativo+bradesco+seguros+para+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501495/normal_5fdc5458c4aef.pdfIn PDF document text
    • https://tediresul.weebly.com/uploads/1/3/5/3/135345321/2514251.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499319/normal_6018f9318dd53.pdfIn PDF document text
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/92abfe166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426090/normal_5fd248ec19276.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mokixetat/acc_aha_hypertension_guideline_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8739b96-9259-4b9f-80ac-d6e43857220f/peavey_bandit_112_solo_series_scorpion_equipped.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/are_all_garmin_watch_chargers_the_same.pdfIn PDF document text
    • https://994180ce-385f-4272-9833-4a204a825e0f.filesusr.com/ugd/ec0c41_71edd7cc5442483a976e086c8ca0592c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gifiz/nisuwurekaze.pdfIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_a0bf11a2764041db8f4442ad6a7bba6e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/plastic_sheeting_ne_demek.pdfIn PDF document text
    • https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_49b992a3da4a43d090d05845dc41cb11.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/flower_hand_embroidery_designs_free.pdfIn PDF document text
    • https://8c0e102b-efba-4641-b7fc-347c26357927.filesusr.com/ugd/d420ee_d8142c12b87b4d64be5b95ed941d51a9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/punurum/xizomizerematogoje.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/79398508001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/711b8e55-9999-4783-8ee4-702a1fef24a2/network_security_key_mismatch_hp_printer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B3 5432 bytes
SHA-256: b76330e188fe56ced512e6b5f4caa48b96b06c6c875095d2be4e82376c49cdc6
font_01_sfnt_off0000f530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF530 4640 bytes
SHA-256: beb0c4aa9debfd7c5c536e4e7d5cee2838fda1ee511d9811933a84e3477627fb
font_02_sfnt_off000101d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D4 13340 bytes
SHA-256: d1d09d5cc48f1f0091a856b6c5b7eac5c41a270fa5e721042409fc02a9208af1
font_03_sfnt_off00012b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B97 16292 bytes
SHA-256: 6671b4a90c4cd380582f8247ac04a031a32bbf4c91e948fcb56e93055dc4f003

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