Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ab5837b8ffd844…

MALICIOUS

PDF

68.0 KB Created: 2021-03-05 16:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 97e92f93ffeadcb9555c903d305db88d SHA-1: bcdb9b0640d9f38023b77439f2198c3739efb3db SHA-256: f1ab5837b8ffd844b8cedbfcf23a3ea0c7c7d987ca55ec0147da655e9a8cca89
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=annke+dvr+manual PDF link annotation
    • http://lakomutogekegi.22web.org/14551628016.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/18926824323.pdfIn PDF document text
    • https://pegipipuw.weebly.com/uploads/1/3/5/3/135395330/c1014bd9797.pdfIn PDF document text
    • http://kunujunekedi.mygamesonline.org/77169127991.pdfIn PDF document text
    • https://gefobivuvevu.weebly.com/uploads/1/3/1/3/131380717/nedefaj_vavepeduvomoju_jazovudem.pdfIn PDF document text
    • https://bemezonef.weebly.com/uploads/1/3/5/3/135389856/963ecc0b606cc5.pdfIn PDF document text
    • https://rozusuwiloguf.weebly.com/uploads/1/3/4/6/134644861/tazebitinaderi-turelubavoj-bemozijovuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikogaled.rf.gd/kupimukapuzoxuwomolenat.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/love_story_lyrics_in_english.pdfIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_9b8a1fad3f124500beed2011d77dc4d7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/chemoinformatics_in_drug_discovery.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_3742aa3008f242c7ad65e9a5a06a053d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fbd32ab-2df3-42eb-a13c-4ab54b882064/fiwikuse.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/android_auto_app_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/defuwojatiwejax.pdfIn PDF document text
    • http://lanuvurunipa.epizy.com/star_wars_unlimited_power_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b2b580d-9bf0-4563-9df7-5701a8e32bbf/buzopamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d642ee3-08d4-4970-823a-4cba3433c337/gofipulanupaxojekadovajod.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC30 4904 bytes
SHA-256: e22cd285bee42f8bd7c899fb30e0a5408146294d59a44624df914592687da442
font_01_sfnt_off0000dcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCA 11536 bytes
SHA-256: 4ae332e8d71a58ccaa95c419a3b07dcc137e9a39cd5a6fd569ce22a1fab4b0a0

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