Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a568ee0dabbf99e…

MALICIOUS

PDF

88.5 KB Created: 2021-04-03 17:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d056817c37608f584392e99dbab6d435 SHA-1: c4ed04657be3c93bd5ec465b3ed46673d8bec079 SHA-256: 8a568ee0dabbf99ea07df9fd6934774b9f169a8b609b3c7e0e3f05e69ff6fd51
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://lozipotod.ru/award?keyword=benedict+anderson+imagined+communities+introduction+pdf', is presented as a search result for an academic paper, likely a lure to encourage downloads. ClamAV detected this file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0', further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/award?keyword=benedict+anderson+imagined+communities+introduction+pdf PDF link annotation
    • https://zufavaxevonek.weebly.com/uploads/1/3/0/9/130969036/9568506.pdfIn PDF document text
    • https://cdn.sqhk.co/gojelonub/8Znge06/lafopif.pdfIn PDF document text
    • https://kaxesudinebeg.weebly.com/uploads/1/3/1/3/131379803/1bc89.pdfIn PDF document text
    • http://natnat.fun/7622037236647f5q.pdfIn PDF document text
    • http://kalowodopole.mygamesonline.org/cultura_de_arabia_saudita.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/yibihp5/download_free_pandora_music_radio.pdfIn PDF document text
    • https://fojojaroj.weebly.com/uploads/1/3/1/4/131453509/vawibowemaziven_gudif_jozojawujek.pdfIn PDF document text
    • http://bloomwithdeanna.com/69301020443uald6.pdfIn PDF document text
    • https://xaziribubeka.weebly.com/uploads/1/3/4/3/134397614/naxavuted-surawepub-xozaxon-durizujebal.pdfIn PDF document text
    • http://kajipim.mypressonline.com/building_block_model.pdfIn PDF document text
    • https://tupimala.weebly.com/uploads/1/3/4/9/134904604/bugagexorig_tojuwelusejijeg_tejovuvunekopo_dufezop.pdfIn PDF document text
    • https://jajajijonox.weebly.com/uploads/1/3/1/4/131453539/pasenulanagerodukoru.pdfIn PDF document text
    • https://bijoxopibomer.weebly.com/uploads/1/3/4/3/134325560/japomowatege.pdfIn PDF document text
    • https://cdn.sqhk.co/xuteposidobi/bsjbji2/46080947119.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/xeropizuwe/manual_boss_gt10b_portugues.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/45123491041.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/create_private_photo_folder_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/cute_baby_status_wapwon.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_off00011ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB1 5492 bytes
SHA-256: 02de0928a45c984bad955ed6af69af4e5d0c954dcb67d445217d097988ddf379
font_01_sfnt_off00012d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D50 11848 bytes
SHA-256: e1e2f3e4044a3d44c3c556c269750c1a66035efc60fff83b929b77d1222ba58a

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