Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51bb300dc634749…

MALICIOUS

PDF

92.2 KB Created: 2021-01-27 20:34:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 109b9e6ec1cb07c83dd02691d47e6a13 SHA-1: 7302c8029dff9b11e37701159e8a82d66860317b SHA-256: d51bb300dc63474993fce23afa4ebb42080d9ea14433c0ff7feba6d688d32d3a
156 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 potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_URI' heuristics. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics confirm the malicious nature of the file. The embedded URLs suggest an attempt to redirect users to phishing or malware-hosting sites, aligning with the 'Spearphishing Attachment' technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://baarspo.ru/123?utm_term=gobi+manchurian+dry+vahchef PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460076/normal_6009f11185696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480585/normal_5ff356d512881.pdfIn PDF document text
    • http://dawavuwera.22web.org/transformers_age_of_ultron_imdb.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/5cf2d13374100.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493200/normal_5fe17afda3706.pdfIn PDF document text
    • https://zapineri.weebly.com/uploads/1/3/4/7/134707132/c1153408ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464877/normal_5fe38d5401bf1.pdfIn PDF document text
    • http://dixojele.22web.org/23537279146.pdfIn PDF document text
    • https://gorasamigizutod.weebly.com/uploads/1/3/4/6/134600185/3017580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447431/normal_600d67a314b62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_600c91c475108.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496404/normal_5ffd9f14abeb1.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/gorajikunobixi/ashampoo_winoptimizer_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/building_information_modeling_training_in_hyderabad.pdfIn PDF document text
    • http://zodejewab.epizy.com/5447701149.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/59975145086.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/bubagudimapitomafetedi.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/togutozibuwudixawowejawuf.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/99359956748.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/nusejovuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/zobigigotofuboxegogaw.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F7 5384 bytes
SHA-256: 0ceb8000c4fcc86e95c14a20aef797833dadabc4dcb49ce4db6e349e2cf2c15f
font_01_sfnt_off00013327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13327 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off00013e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E8A 10748 bytes
SHA-256: 2463912e68ae35913d3f3733e5b0d17d9531dea802d2c92521b0f28a5b69bd5f

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