Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8efc451e3c5a10…

MALICIOUS

PDF

65.6 KB Created: 2021-01-24 00:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 30bdedeea5254afedb912986ff2c8891 SHA-1: 9b99faac46554d6a6f73b8ac19a8b2bae22826d7 SHA-256: 8e8efc451e3c5a1077105155d6c0a5e11e8e32f54421163e6d703de6c3031031
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity, likely leveraging a social engineering lure related to GIS maps.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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://traffking.ru/123?utm_term=bayfield+county+wi+gis+map In PDF document text
    • https://site-1242588.mozfiles.com/files/1242588/men_s_journal_holiday_gift_guide.pdfIn PDF document text
    • https://site-1232858.mozfiles.com/files/1232858/65895878433.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421329/normal_5fdfbcef58a7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5feffb1532e85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410448/normal_5ff2f51eaf547.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5fe800903b6d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485822/normal_60071d961e0ac.pdfIn PDF document text
    • https://site-1172175.mozfiles.com/files/1172175/tovaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_5fd2ada22bd95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472186/normal_5fdf1e8b9e6ad.pdfIn PDF document text
    • https://site-1168031.mozfiles.com/files/1168031/android_7__0_frp_bypass_tecno.pdfIn PDF document text
    • https://site-1174034.mozfiles.com/files/1174034/free_pool_party_flyer_template.pdfIn PDF document text
    • https://site-1177175.mozfiles.com/files/1177175/new_odia_film_blackmail_video_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putiremupupunis.epizy.com/bethesda_system_for_reporting_thyroid_cytopathology_bsrtc.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/endangered_animals_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/miropusomejirowekub.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/causes_of_down_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/zobimosin.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_off0000c342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC342 5620 bytes
SHA-256: a5369a17efbebf449aacd22dd23de5dbc947fa884b4afd2edeeb4024f1415b24
font_01_sfnt_off0000d67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67C 10252 bytes
SHA-256: 7db14af8b920355db4cbfb3a8511e0291a09f4291727f55f81549e4bb490f274

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