Malicious PDF — malware analysis report

Static analysis result for SHA-256 bede7bbbbe3c71c9…

MALICIOUS

PDF

85.1 KB Created: 2021-03-02 23:36:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8833d4d42deedf6a65a266a7c50c2bb0 SHA-1: 06cfb01cda7c90477022b76ea4866c94ed673971 SHA-256: bede7bbbbe3c71c989baa19a79c7b8ac5a51c694230f8d6004fecdcf85960dd2
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution vector, likely leveraging a spearphishing attachment as the initial access method.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://fokemale.ru/123?utm_term=little+house+on+the+prairie+season+6+all+episodes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485800/normal_5fc9eebd58c41.pdfIn PDF document text
    • https://diwekapuxejube.weebly.com/uploads/1/3/1/4/131455019/kulub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372983/normal_5ff6810327218.pdfIn PDF document text
    • http://ninotekega.mygamesonline.org/6201919140.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412575/normal_5fc7d70168672.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375196/normal_5fe548c4d7b01.pdfIn PDF document text
    • https://biwawabagukolaz.weebly.com/uploads/1/3/4/7/134730268/felazigu.pdfIn PDF document text
    • http://kuzexamipapoxip.medianewsonline.com/4342028608.pdfIn PDF document text
    • https://zabojipenow.weebly.com/uploads/1/3/1/6/131636987/9d25c.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/77766266218.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
    • https://s3.amazonaws.com/salade/jawbone_up2_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/71769204881.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/apocalypse_world_2e.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/domozixa.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/guzisalafe.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/vsco_full_pack_gratis_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/pivet.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/91770920280.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_off0000eb89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB89 5024 bytes
SHA-256: 15b240f7c553e2419b07a0107f1b59e8ba7331e80e51c1d5d4b0efaff3bdbf3d
font_01_sfnt_off0000fc85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC85 10508 bytes
SHA-256: 4716d4d8ccb7a4bc620e978d0a63a184644b83858169594e9dbd9f475a1c71df
font_02_sfnt_off00012060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12060 17484 bytes
SHA-256: 209fe79e13ce9391175efa08e0d21688169aefd8e93c31d3e8d1d0596cfd77fc
font_03_sfnt_off000137f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137F9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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