Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee890fee324d3fc5…

MALICIOUS

PDF

106.0 KB Created: 2021-03-24 16:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f12dca536211778e845a2347ebda562e SHA-1: ccdc38df7d7b6080faa364ad6e80a20ec32e09e4 SHA-256: ee890fee324d3fc5cdcc655802f22dbd4bf49c5f3eb113ad6dfd99306e3c2211
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and it contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to a printer user manual. The presence of multiple unknown URLs further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=kyocera+ecosys+m5526cdw+user+manual
    • http://rasipafus.getenjoyment.net/83424108551.pdf
    • http://lorewipa.scienceontheweb.net/suxunevaxunidigimi.pdf
    • http://logmeinnow.xyz/4344966645495hu4.pdf
    • http://mscgis.net/2246633597121bsp.pdf
    • http://all-system7.club/twilight_saga_breaking_dawn_part_2_soundtrack_downloaddqsj8.pdf
    • http://nimidarizul.22web.org/66076650853.pdf
    • http://babysampler.com/dirt_bikes_for_sale_craigslist_vaeji1a.pdf
    • http://bumawusuka.mypressonline.com/67882840746.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5f41361e-7427-4bba-b743-13325b048dce/13386198694.pdf
    • https://uploads.strikinglycdn.com/files/a15e1f04-e6be-489d-bbac-6a3a9f69a814/complexity_and_contradiction_in_architecture_robert_venturi_summary.pdf
    • https://s3.amazonaws.com/begijufadi/65501645248.pdf
    • https://uploads.strikinglycdn.com/files/2c330ff6-a121-4ea5-a165-d65606fcf391/how_much_is_a_battery_for_a_2013_dodge_avenger.pdf
    • https://uploads.strikinglycdn.com/files/3249e676-68c5-467a-bbf6-0273ff6654cf/dd_beyond_unearthed_arcana_ranger.pdf
    • https://uploads.strikinglycdn.com/files/984dc1b0-17dc-47c8-8df0-b4374516cbbe/dobuxawuvexidetis.pdf
    • http://nujugeteteda.myartsonline.com/kufowanelanawi.pdf
    • https://uploads.strikinglycdn.com/files/7c91765a-dad2-4392-907e-d2800331806f/how_to_clean_your_water_cooler_dispenser.pdf
    • https://uploads.strikinglycdn.com/files/a1e0b428-3960-43f7-ae69-82599d226524/how_to_read_trane_model_number.pdf
    • http://zamituzok.rf.gd/vemoviwamekefotazob.pdf
    • http://dokudaruriwiv.atwebpages.com/the_blind_side_movie_true_story.pdf
    • https://s3.amazonaws.com/ronatiduzoxij/petsafe_wireless_collar_stopped_working.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000137e8.bin
b64350c7bbdab9a8dc064f21a0594747627629593141b2bb6cd02da97e11ebda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137E8 3724 bytes
font_01_sfnt_off00014526.bin
60155095fadea0c8566251cdfcec78c7fd2dbcd2fc7f231477c46e029b8b1513		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14526 5660 bytes
font_02_sfnt_off00015879.bin
df8fb9cf249b0f2445a136d986b9567aba127e1dc1fb6fe3ee3ac5d2e3d2eba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15879 13876 bytes
font_03_sfnt_off00018423.bin
7ea4ad8fabf58a022be5f422cdf71e1d18c834a5727f5ba12988ec6015bab3a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18423 16348 bytes

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