Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca9968c7357a116…

MALICIOUS

PDF

88.1 KB Created: 2021-04-02 17:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da66557d000583635902694daea35606 SHA-1: 663a09386877e691075b3a945014c5b432b62ac3 SHA-256: dca9968c7357a1160e34fdc1c77184a83f83f817622801155e49d38fe4c4f439
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains numerous embedded URLs, one of which is directly referenced in the document's metadata, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to oil extraction, likely used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=extraccion+de+petroleo+en+el+mar
    • http://sosuziba.mypressonline.com/kilafodefodenofifanawi.pdf
    • https://zobezefifoluza.weebly.com/uploads/1/3/5/3/135306737/nugexax-darikitoje.pdf
    • http://meetplafond.xyz/wogima79ext.pdf
    • https://cdn.sqhk.co/terodekijur/8jhPCWW/69453535548.pdf
    • https://giridoxaxe.weebly.com/uploads/1/3/4/7/134703098/cab14.pdf
    • http://fetedeju.mygamesonline.org/86652517606.pdf
    • http://nitezebana.iblogger.org/good_food_guide_melbourne_hatted_restaurants.pdf
    • http://aicberg.net/organelos_de_una_celula_animal65s9b.pdf
    • https://busedulaxuxelo.weebly.com/uploads/1/3/1/3/131379622/nigolozew_jixofudexo_zoxut_lefadatizuxi.pdf
    • http://white-x.fun/lajifibesakedezosekevea54tg.pdf
    • http://hackins.site/13118395823yxqlx.pdf
    • http://tafugegajotu.mygamesonline.org/laxonujugozidadaruvibajuj.pdf
    • https://cdn.sqhk.co/letarezetap/gchdjaG/lolegafofapolad.pdf
    • https://zemedabumudog.weebly.com/uploads/1/3/2/7/132712209/45664f6fc25.pdf
    • http://microdigitalmeter.xyz/how_to_use_resistance_bands_for_rotator_cuff_exercisest6q78.pdf
    • http://kinoxca.xyz/nekowogajarerepunaxonim6nmgn.pdf
    • https://cdn.sqhk.co/mezewimaxus/1Cwjh86/best_90_music_hits.pdf
    • http://raffle.website/75719785755m7gqc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tapukov.rf.gd/92808764576.pdf
    • http://bovamiwojilonem.epizy.com/adobe_reader_standalone_windows_xp.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010884.bin
f980b3ab399ae426bcc646a528417613f3b6ad3381c349fa0b01ce229796710b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10884 5068 bytes
font_01_sfnt_off000119af.bin
39ca62fc0515a878195fe0cd80d00934c8131254489fae3e2181fc075fdfb0ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x119AF 10140 bytes
font_02_sfnt_off00013bed.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x13BED 16204 bytes