Malicious PDF — malware analysis report

Static analysis result for SHA-256 369e28fd56c78c40…

MALICIOUS

PDF

79.8 KB Created: 2021-04-24 17:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e96bbaede604309b99b19a6f79c12675 SHA-1: 22f1642bee2d40abbd2bd57c3bdbae7216416a7f SHA-256: 369e28fd56c78c40c79980364766c749514392124396510c17d6aaaf68c0f820
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 as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body contains text related to a 'washer not starting' and an embedded URL that functions as an SEO redirector, likely for phishing or malware distribution. The presence of external URIs and the ML classification strongly suggest a malicious phishing or downloader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=ge+hydrowave+washer+will+not+start PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407102/normal_6003c49579d22.pdfIn PDF document text
    • http://blue-tick-central.com/wijakimibedex7vt5t.pdfIn PDF document text
    • http://shoop-ff.ru/urine_glucose_test_lab_reportf1b4l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_604a66ff5bb5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464735/normal_5fd8c22cb2db2.pdfIn PDF document text
    • http://ighelpcenter.xyz/rajiladatecni3k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4addb25b-bbca-4ff0-aea2-8283b4412cc3/62297836122.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/kijivufepubax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb09091-85bb-4fd5-811b-4a93cdf93b1b/42619814885.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/76228001346.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/30290866847.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/87753952938.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/mipowejujatodatem.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/battery_booster_lite.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/lufovezur.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/21480367383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb5962f-9419-4201-8d7b-382f849d538b/armstrong_concept_10_air_conditioner_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a27a9c1c-e353-4d0f-a947-e0e927c2b16c/sig_sauer_9mm_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c66e3b2-df0d-43db-85b4-d46ae597abdb/3430941933.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/what_nationality_is_pippi_longstocking.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/kikugipalijezurelada.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 2

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_off0000f820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF820 5196 bytes
SHA-256: 4e195fe856f745ff74e5d768401a5d766d09d3f6243210631151336297edb581
font_01_sfnt_off000109e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E6 11720 bytes
SHA-256: a292a6c001bac46bd78716576810261283272d21837b16ca0306d7b40f75751e

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