Malicious PDF — malware analysis report

Static analysis result for SHA-256 29891071d86d8826…

MALICIOUS

PDF

68.2 KB Created: 2021-02-13 02:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5892ba9c7882c2aeef0283a5f138db12 SHA-1: bbea88d565763dcfa1392727fb15621cfe6c7c0e SHA-256: 29891071d86d88260c8929ae50ac00bdd534d56662619a837623075b9679875d
196 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to a link farm designed for SEO manipulation, suggesting a phishing or malware distribution attempt. The primary lure appears to be a fake download for 'terraria apk', directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jottigo.ru/wix?keyword=terraria+apk+download+full+version+free PDF link annotation
    • http://saxozumipelezip.22web.org/grandia_1_guide.pdfIn PDF document text
    • http://telemprom.xyz/top_music_player_2020wfatp.pdfIn PDF document text
    • https://dorigobumin.weebly.com/uploads/1/3/1/3/131384291/rakidolevojale.pdfIn PDF document text
    • https://tiporedoxuva.weebly.com/uploads/1/3/0/7/130740235/3545389.pdfIn PDF document text
    • https://gofupadosu.weebly.com/uploads/1/3/4/8/134853885/weforuruxapem_rerugitug.pdfIn PDF document text
    • https://burogoga.weebly.com/uploads/1/3/2/7/132740280/luvabiruvatep-talomebuxetese.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/valuation_se_dplacer_au_quotidienx1ksw.pdfIn PDF document text
    • https://dunudafulu.weebly.com/uploads/1/3/1/0/131071166/junoni.pdfIn PDF document text
    • https://kunoloxudiruk.weebly.com/uploads/1/3/4/7/134767428/6265281.pdfIn PDF document text
    • http://kupuzuzopojesu.22web.org/26568408416.pdfIn PDF document text
    • https://fexasesari.weebly.com/uploads/1/3/1/0/131070539/ae565cc2d3227e.pdfIn PDF document text
    • http://gdztut.com/diary_template_2019j0wal.pdfIn PDF document text
    • http://hargotel.xyz/31831852148kncss.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/dufekifaral/51427270893.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/nabalubaru.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/marine_navigation_apps_for_android_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/jah_jah_city_riddim_mix.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/ascension_mont_blanc_guide_saint_gervais.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2F 5200 bytes
SHA-256: 7a4981947a07b59b76d3b8227e33311251687013d1d069cb388d9ea906ae41b0
font_01_sfnt_off0000e00b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00B 10432 bytes
SHA-256: 4bef588edce740a7f3eb62e389a74e82143dfe35758e4912ee17b23f4d1dd991

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