Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c954958737cf28…

MALICIOUS

PDF

78.7 KB Created: 2020-12-24 13:32:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0fa5fcd1863ba30912d67fee96787aa2 SHA-1: e64bb847d868bde44a6a9f5300cf26cd4f2b23c2 SHA-256: 67c954958737cf2811f6d9dd65d2e15f20a8432034b5118a1d3bf75a78216822
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. It contains an embedded URI that redirects to a URL associated with a 'free-download phishing' lure, specifically mentioning 'live tv philippines apk 2017'. The document body is heavily obfuscated, but the presence of the malicious URL and the phishing lure strongly indicate a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffe.ru/aws?utm_term=live+tv+philippines+apk+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422145/normal_5fa70e5e31eb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402948/normal_5fc82de855e54.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/jijumupade/estimate_square_root_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29a34fa-d351-4ccc-867e-172d713a9931/26974525738.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/64293390361.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/51286135552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016f0888-d808-427e-a1b0-97a301d837b1/nureve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4517a0-aaa4-4f7d-9c37-8f0ec4046a9c/biology_chapter_23_assessment_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/chick_fil_a_nutrition_information_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/jamopudom.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/spotify_download_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/inventory_report_types.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/16626800497.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/midutuvanasexidituj.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE237 5280 bytes
SHA-256: a67cefcb091aea485b986944c527f0ff654a5b8520cc1713b95d6b39f05b240f
font_01_sfnt_off0000f43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43E 10600 bytes
SHA-256: 8e73f85905130ddce0ae55003ebd975832743a270cc1cccabe4f40f01af6645f
font_02_sfnt_off000118a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A3 16060 bytes
SHA-256: d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72

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