Malicious PDF — malware analysis report

Static analysis result for SHA-256 000d9ad2fb6849fe…

MALICIOUS

PDF

85.6 KB Created: 2021-03-18 10:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d2a56a04c6ef9100b3a8bf1e5d4814db SHA-1: cdea42cb4fd0bfcef44f69a615c6e3203d0dea53 SHA-256: 000d9ad2fb6849fe0f864962159cb31faff6e0d6e4fc1dfea5b6ab99799fc0d5
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to link farms and SEO redirectors, indicating a phishing or malware distribution attempt. The presence of a critical heuristic for PDF link farming and a high ML score further supports this. While no scripts were directly extracted, the structure suggests it's designed to drive traffic to malicious sites like 'resalured.ru'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/wix?keyword=santanaraptor+vs+velociraptor PDF link annotation
    • https://derovidexaw.weebly.com/uploads/1/3/1/3/131382126/safonifunakido_sidol_zugijukatoli.pdfIn PDF document text
    • https://xofofafe.weebly.com/uploads/1/3/1/4/131438501/panob.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdfIn PDF document text
    • http://trastenmyqort.online/rutozuxidalufaniminokhpxe5.pdfIn PDF document text
    • http://circleshtang.xyz/236392492984b8br.pdfIn PDF document text
    • http://daravto18.ru/munchkin_game_rules_faqc5xkr.pdfIn PDF document text
    • https://cdn.sqhk.co/razupojoja/jfn7Tij/stick_of_titan_2.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/wilidi.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/laxef.pdfIn PDF document text
    • https://buxomajuse.weebly.com/uploads/1/3/4/5/134588570/panudubakejonuj.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/gatunenog.pdfIn PDF document text
    • https://sakavafufegig.weebly.com/uploads/1/3/5/3/135323197/2952822.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/kudowo/dual_whatsapp_apk_free_for_android.pdfIn PDF document text
    • https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_9d8cd664e03c4cbd82b8a7d56b5e8cc2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/farowug/ryobi_p100_18v_battery_charger_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/oxidative_stress_in_plants.pdfIn PDF document text
    • https://0778d94d-b67d-49c3-8f6f-43f52d6edec9.filesusr.com/ugd/b85eb0_eed4ce65f3e7454394dc93582b9482e8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jovekus/povaxopusabikid.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/gixifevafavipa.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27B 5088 bytes
SHA-256: b2121b2ba10a2ba7a80e300571db6320c95907ae99abd85730184bcfd4823187
font_01_sfnt_off000103d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D5 1972 bytes
SHA-256: 5386088f5b9c9423fc811435c62cd5d519bb7dbf7cdc6894a5d6419f2e18e093
font_02_sfnt_off00010d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D21 11004 bytes
SHA-256: 0fa9d27b5744bb5dfb9012dec42f704264f9a60afab130147bc182392880d35e
font_03_sfnt_off000132b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B2 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939