Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a570c77fc11d22c…

MALICIOUS

PDF

83.2 KB Created: 2021-03-08 17:00:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28e9f5bbfe20b8e12b6a22ec348d59f2 SHA-1: e10701c745e1b29c95248b22210e309181048d02 SHA-256: 8a570c77fc11d22c8d09064b81eda189cb621e00a2c0b73b9dfbab2545a0cb22
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a ML classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'different forms of listless', potentially a social engineering tactic to encourage clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/aws?utm_term=different+forms+of+listless
    • https://cdn.sqhk.co/zukasedu/bjgfDCd/human_fall_flat_ps4_boat_level.pdf
    • https://cdn.sqhk.co/jiluputumusi/7C7Kpuj/infected_ingrown_hair_cyst_home_remedy.pdf
    • http://vurenosul.22web.org/block_form_letter_example_tagalog.pdf
    • http://nopisodozig.66ghz.com/ikea_bed_frame_king_single.pdf
    • http://niwifara.22web.org/d_d_5e_custom_character_sheet_creator.pdf
    • https://cdn.sqhk.co/bidelefo/hNVhegf/radio_italia_anni_60_roma_streaming.pdf
    • https://cdn.sqhk.co/velizovatim/fgjibge/soccer_fight_2019_football_players_battleship.pdf
    • https://cdn.sqhk.co/ximirujusuxo/gThhYhd/68911523929.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://biwugilepo.rf.gd/how_to_change_your_name_on_your_drivers_license_in_texas.pdf
    • http://gezobejutewevu.epizy.com/98520792567.pdf
    • http://pawuvunof.epizy.com/beautiful_english_words.pdf
    • https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_bed8509588fd4400b892843406a38b33.pdf?index=true
    • http://nosifunugiwes.epizy.com/bitcoin_binary_checker.pdf
    • http://livofos.epizy.com/breakin_2_electric_boogaloo_soundtrack.pdf
    • https://36535336-4f9e-4c0a-b1ad-3385cb5d4299.filesusr.com/ugd/15ebe2_eaaa0c6744354e62988baaccbbd5e1da.pdf?index=true
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_e1f50f86e0ed47a490eae5026fa6f463.pdf?index=true
    • http://jufesibujubaji.rf.gd/xadoj.pdf
    • http://sedozod.rf.gd/c_primer_stanley_lippman.pdf
    • http://maboruj.rf.gd/66895179191.pdf
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_98b0ebf6efa547cf8b7e1613dfe6a48f.pdf?index=true
    • 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_off0000e6e5.bin
415293fb15340e17cefc305d2bcb7b0143689cf0271ad0790b76db8ef674d832		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 4488 bytes
font_01_sfnt_off0000f606.bin
8a8a45d1a92f474b7933c4912562d89568897c29a65d575087d948383fd9e932		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF606 11252 bytes
font_02_sfnt_off00011c8d.bin
8f676b3be356e2086f34f7c81dd3575184be90372cbe0b4aaba7ba30be3377d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8D 16060 bytes
font_03_sfnt_off00013127.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13127 4324 bytes

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