Malicious PDF — malware analysis report

Static analysis result for SHA-256 530afeeb89606aa9…

MALICIOUS

PDF

78.8 KB Created: 2021-03-17 21:38:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0079f6a5957450ec714d6153e70f1470 SHA-1: 57b0a029628e74fc32d11123fda4ad2b1145cca3 SHA-256: 530afeeb89606aa9eebc302013d996af3c3c99b914e5af626baec4f71d9ab4c5
214 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a string that appears to be a lure related to 'inside out riley's boyfriend', suggesting a phishing or social engineering attempt. The presence of a large number of external PDF links also points to a link farm, likely for SEO manipulation or to host further malicious content.

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
  • 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://crophysi.ru/wix?keyword=inside+out+riley%2527s+boyfriend In PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/4629546.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/ihdeicn/vikixapivotedirudit.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/hiLJhaL/17981431794.pdfIn PDF document text
    • https://cdn.sqhk.co/mudewaxiv/1ajeVi7/jhankar_beats_movie_song.pdfIn PDF document text
    • https://tomasuniraruz.weebly.com/uploads/1/3/5/3/135392941/kurowe.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/mjiheja/slots_online_real_money_uk.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/neviwove/43765594785.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/sobaxuzixux.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/lutaxedino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55302560-4a89-4954-b0e2-58a8de1673dc/23219351000.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/controlador_midi_adobe_audition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/accb79d4-8811-48aa-b83b-a1913c4888f1/wixubokupekasixatok.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/luwulimamomusidizulenudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f930018d-5f6a-4f19-8d89-14deb1abe395/microbiology_salary_per_month_in_nigeria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bb44a54-ebaa-4a72-b85e-aa7ff7d1aa5b/682078575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afd775dc-0017-44fc-b966-2e1425dc0194/whirlpool_cabrio_washer_e3_f5.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/5811211745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afdcddf8-e33d-4b7b-affa-07f8a818d596/john_deere_x320_mower_deck_parts_diagram.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_off0000e974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 4784 bytes
SHA-256: 7c457c64872c541d97fbf939d9b8fc42e98ee3066e6f51971aa156a1558d743f
font_01_sfnt_off0000f9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C5 10772 bytes
SHA-256: 0073fe87c0bd6dd968727b0b8c45e3b92ab71f4691d6e903fc8b1c6a251d7f5c
font_02_sfnt_off00011e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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