Malicious PDF — malware analysis report

Static analysis result for SHA-256 30908adcf93bd176…

MALICIOUS

PDF

69.4 KB Created: 2021-03-20 03:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f468303e7f8de1d5ab470495e088bd83 SHA-1: eaa0bfa48a1c6eaa44d2f3cec2783818931d85b5 SHA-256: 30908adcf93bd17656ee2ba822b68ad343d30bd74fbb18dd05796e78ddf28d08
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. ClamAV and ML classifiers have identified this PDF as malicious, specifically flagging it as a phishing trojan. The embedded links suggest an attempt to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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.
  • 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://mezovuduw.ru/award?keyword=base64+image+to+pdf+java PDF link annotation
    • http://padlamadla.site/bhagavad_gita_in_sanskrit_with_marathi_translationa2i3a.pdfIn PDF document text
    • http://harkateine.fun/792178751331dny4.pdfIn PDF document text
    • http://dakolozen.22web.org/sarovigodeli.pdfIn PDF document text
    • http://ehaberdevlet.com/bixejokusewae4vb9.pdfIn PDF document text
    • http://idealica-italy.site/would_you_rather_questions_clean_buzzfeedon80i.pdfIn PDF document text
    • http://hotloveme.online/85141194301ypcgs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://didosides.rf.gd/food_stamps_south_carolina_income_guidelines.pdfIn PDF document text
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_90cb1c11d173476f94f3fabcff28d832.pdf?index=trueIn PDF document text
    • https://6c639bf1-704a-4500-b661-329758898742.filesusr.com/ugd/02d620_905b6627374b4518adc59c4b05648f2b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/62461110954.pdfIn PDF document text
    • http://savefativiluz.epizy.com/annexure_a_format_for_export.pdfIn PDF document text
    • https://48936d5e-4b15-4059-a328-ddb12afcc15e.filesusr.com/ugd/173145_945eae1b449646e28d2eff264cf4fb19.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/microsoft_office_2013_free_download_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/lutuzavimimagopemutefunod.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/33605164713.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/is_warm_or_cool_humidifier_better_for_asthma.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/online_video_editor_without.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/wordpress_themes_with_image_slider_free.pdfIn PDF document text
    • http://fozikabev.epizy.com/12236208169.pdfIn PDF document text
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_ca07c9c51c574c48bcf47fa234959e0f.pdf?index=trueIn PDF document text
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_09f21097a2424a32845fdc4e528fbfd6.pdf?index=trueIn PDF document text
    • https://9f4ad419-87ad-4507-9b23-40b7c7395cc9.filesusr.com/ugd/55478e_082ad12d91ac4825ba3a87feb127ad37.pdf?index=trueIn PDF document text
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_ddafb4de4eac47409c64fe2bd8c9e2e9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/blowing_raspberries_sound_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/how_much_is_pulse_oximeter_in_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/daily_life_of_peasants_in_medieval_europe.pdfIn PDF document text
    • http://kijurisotam.epizy.com/sijuwosizopujovijaza.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24B 5660 bytes
SHA-256: 45ebfcd9e63ff3a09896120b14d79ea35d1c8fd5abe3ea29ca9c701a48618697
font_01_sfnt_off0000e5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A3 9984 bytes
SHA-256: 9d7eeaad3d752b3ae4ceb7cd41777df69b7b4ad59f6543b610daff2803864fb2

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