Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44025a7cfef9bfc…

MALICIOUS

PDF

46.5 KB Created: 2020-11-03 08:20:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5cdbf19a3ea601579e581ab63c89cd92 SHA-1: df3c84b6a1a8c4ccbb543d8689692c1e2d930759 SHA-256: e44025a7cfef9bfc19a96c1d3c062eee2732c4feffce78b021f6468eb87286d1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/123?keyword=msp+hack+tool+no+survey+or+human+verification In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/novovuxosijuzuz_wofabunutigepuw_dugulelura.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/eafd482cb280cc.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/topagajep-dufemij.pdfIn PDF document text
    • https://suvojenedixu.weebly.com/uploads/1/3/4/3/134354738/46cdae3bb46.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/sabok-guwadokekul-wagivomi-fosutogo.pdfIn PDF document text
    • https://sosegesidor.weebly.com/uploads/1/3/4/4/134465043/e4bf8245d.pdfIn PDF document text
    • https://bozalugim.weebly.com/uploads/1/3/4/3/134343660/sezop_firijunazuzu_dipova_zabaxulupud.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/fasanag/vulupexezexaxife.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/xogesalowimewuvisizupil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2971/2029/files/theological_reflection_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/osculating_circle.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/62692002677.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/transmutation_circle_fma.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_off00007530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7530 5488 bytes
SHA-256: 7be302c15b99a55ec8e4a59693b3bae4381a2ffc583fb7ff45436d2c7d221e35
font_01_sfnt_off000087ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87CE 10880 bytes
SHA-256: 37ed5d06abf34bb338cb416886ac546cf9cbde84eb03dddcdfda3876b2d9e865

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