Malicious PDF — malware analysis report

Static analysis result for SHA-256 1049ac244a8662d8…

MALICIOUS

PDF

74.8 KB Created: 2020-12-04 14:15:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eaa38babe50a565640e9d52a6d677cb6 SHA-1: 66bd05fc63c7dc7631d5784965ff7fb640e765d9 SHA-256: 1049ac244a8662d88fecf2db3e5df1a65e9716a6d62c841ede9ed0923bfeac5e
156 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. 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 0.9998

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://trafffe.ru/aws?utm_term=ornamental+plants+in+india+pdf PDF link annotation
    • https://xolasugoduto.weebly.com/uploads/1/3/4/5/134592704/5a4506ed.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/a37fbee0a.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://uploads.strikinglycdn.com/files/2bbc3cf2-c31b-4096-989b-884505a71fed/78797073516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d42883-72c9-4fcc-a67d-006ce69e6ee0/befilukegagesa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc1e57c7acac6192a05a1e5/1606542717836/36983021934.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eb27f7cf8c75402b0337/t/5fc4fd3e61e25426e1d49387/1606745406122/50192949963.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e90c27a199023ab56552/t/5fc0fd863f75b16643f75240/1606483337100/sijofenevaluneruje.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11e11ec917750a3d92ddd/t/5fc62f8b5147b1480405670f/1606823821440/19168103061.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf53d0173fb5383b991cd8/1606374352528/reremibogexipanunubigiki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf57629ee0f32b874ad5a4/1606375267602/psp_battery_pack.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1e7ce02d7d67505d5b43/1606229628674/dota_2_solo_mmr_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0187aa5bc066edfa15e28/t/5fc32128a97599144e5ebbcb/1606623530753/55358211357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba889a5-3e61-4777-8c4a-730df25bbac8/16712687440.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf490b3c6ccf69f35486b1/1606371595388/92374580976.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf63345147b148042b2886/1606378292560/new_home_baptist_church_wetumpka_alabama.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE5 4892 bytes
SHA-256: 9f72364b933c6d692f6a7a7c94ee13c3c824e3c2f6e0805633162a5046a20488
font_01_sfnt_off0000eb59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB59 10808 bytes
SHA-256: 0f11253a02d038b8234f771c10b685e6cf9f426a4b5b26da9ed8f4f1b38831ef
font_02_sfnt_off00010fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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