Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b2de0296b9aaad…

MALICIOUS

PDF

83.0 KB Created: 2021-03-01 19:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: abd634a36782b80d3df694ba5079b7d2 SHA-1: 4841be66c5501707514562fa69e061c42390ae2c SHA-256: 98b2de0296b9aaade9d2d1fb9e50ba2d0e74e56989bb89616cc600669f57d2b4
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to domains associated with link farms and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/award?keyword=red+rising+series+tv PDF link annotation
    • https://cdn.sqhk.co/letaziseb/etgjxgT/94029636045.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/4217304762.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/segominaveki.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/y4hiegf/pupisutonabulugarajiwegu.pdfIn PDF document text
    • https://kibodoru.weebly.com/uploads/1/3/2/6/132695707/jedokerijosito-totalefif.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/giloxozewewutozebekibitoj.pdfIn PDF document text
    • http://nujagexurej.medianewsonline.com/47468427078.pdfIn PDF document text
    • http://bibopasaxuvibu.mypressonline.com/why_do_germinating_seeds_respire_anaerobically.pdfIn PDF document text
    • https://wavamabixalovag.weebly.com/uploads/1/3/4/5/134525364/7de17751.pdfIn PDF document text
    • https://vigoxanumevu.weebly.com/uploads/1/3/4/4/134466257/xamor.pdfIn PDF document text
    • https://sixalusizefew.weebly.com/uploads/1/3/1/3/131378898/vuzed_wexudibafar_menasudiforax.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/jchcicj/house_flipping_business_taxes.pdfIn PDF document text
    • https://genofegewad.weebly.com/uploads/1/3/0/7/130776157/vofanovexegixag.pdfIn PDF document text
    • https://gimiduti.weebly.com/uploads/1/3/4/7/134711596/zitevubup.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/br9YSW0/unacademy_learning_app_for_neet.pdfIn PDF document text
    • https://gufubavofunopi.weebly.com/uploads/1/3/4/7/134704705/matakomopadedi-wevezotax-zinikisab.pdfIn PDF document text
    • https://joxefumisati.weebly.com/uploads/1/3/1/4/131406837/fotadasibofa-piduxetilejox.pdfIn PDF document text
    • https://cdn.sqhk.co/sikudile/tjbwjgb/bubble_bobble_4_friends_switch_eshop.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
    • http://bumejefivoxigo.myartsonline.com/70024848249.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/94598465274.pdfIn PDF document text
    • http://lixugafepujijoj.onlinewebshop.net/how_to_find_the_slope_of_an_indifference_curve_at_a_point.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/limopojokagazenolipulidin.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/moca_7.2_scoring_guidelines.pdfIn PDF document text
    • http://vunonam.atwebpages.com/how_much_does_kelly_services_take_out_of_paycheck.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_off0000feda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDA 4496 bytes
SHA-256: 360852654eb506fed76ca59f731f4d933dc54464f5cf622a414c8831f91bbea4
font_01_sfnt_off00010e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2D 10104 bytes
SHA-256: 9ebaca1d317ca32c5ad0ed1cf67844d73aa1abe097832078e71aec13dacbcdc7
font_02_sfnt_off000130db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130DB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3