Malicious PDF — malware analysis report

Static analysis result for SHA-256 60dabf77f26fb89c…

MALICIOUS

PDF

78.2 KB Created: 2021-03-12 03:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 192b92448b426d6be50113de81d14031 SHA-1: baf60aeca0ec7a29dd6490ab2bfeeaa45f6bb361 SHA-256: 60dabf77f26fb89c19c313fe3ba93ff57c8df99f98afb21d5f02c05643974209
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a high-severity rule indicating an image lure linking to an SEO redirector for phishing. The embedded URL points to a suspicious domain, suggesting it's used to distribute malicious content or phish for credentials. No scripts were extracted, but the PDF structure and URL indicate a phishing lure.

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://jottigo.ru/award?keyword=encephalomalacia+adalah+pdf PDF link annotation
    • https://cdn.sqhk.co/duwokarewesu/jbz12jJ/popofujiluzibupo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382412/normal_601f2cb315d54.pdfIn PDF document text
    • https://cdn.sqhk.co/moradivovep/ibXUlrv/redream_premium_download_crack.pdfIn PDF document text
    • https://cdn.sqhk.co/livujiguf/ggejhSm/led_ring_light_photo_studio_camera.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500446/normal_5ff601cbf3435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_603a6ccb649ea.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/livro_pode_no_ser_o_que_parece.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/hexjhit/87528540695.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5fcd65129831c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_6011276c6b4b4.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/7563057283.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e3afbeb7-8f94-47ef-b3ba-5d552adfae08/sex_education_season_1_episode_3_recap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d48f7c05-76bc-486e-b19b-94e6ecdb052b/twilight_summary_book_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a116f4d-cb16-4625-a5b3-43511ca411e1/zejoperinozug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa3a380a-e797-4b8d-ab28-3668ab51d679/poker_21_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c33a8527-e6af-4426-9377-885bda0025ec/59196916090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e687cd5c-da0f-4fe6-a670-382ace294cb2/how_play_flag_football.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DA 4784 bytes
SHA-256: 67c6c2ee1ecb474005e8a41cf6d94ff7762ddf1b0875fac6bd5e4379233758b3
font_01_sfnt_off0000f8e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E1 11036 bytes
SHA-256: dd129ce7937ed5837c2d025b54a057935a1b0d82ef3c0be4c900dbea4fd274ce
font_02_sfnt_off00011da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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