Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e9e8dd2c058bdd…

MALICIOUS

PDF

82.7 KB Created: 2021-03-29 04:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d1173b42f475da6360d7b4813a6fb73 SHA-1: d651614a70586bd782b60a2356f697f4240fe143 SHA-256: 33e9e8dd2c058bdde3c5786f444ffe065014f340691355cd3d9f70e172a1715e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a reference to 'albion online solo player guide', suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/123?utm_term=albion+online+solo+player+guide
    • https://cdn.sqhk.co/dawajimet/gjjjbjc/diep._io_mod_apk_1._2._11.pdf
    • https://cdn.sqhk.co/janezewufaj/htZ7cgd/homemade_ice_cream_recipe_with_eggs_no_cook.pdf
    • http://sejusadi.22web.org/medical_microbiology_book_free_download.pdf
    • http://info-pages.ru/33704690403htl9p.pdf
    • https://cdn.sqhk.co/dexizajifu/iaid2Fw/cantilever_slab_design_example.pdf
    • https://cdn.sqhk.co/jurugaguvedu/hCcif3s/lugomasilejawojozo.pdf
    • http://load-bcp.com/48927546560nbeuw.pdf
    • http://info-pages.ru/185068376502vf9k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/54f9ecd8-d76c-47a3-a25d-49e28c090edc/21511901920.pdf
    • http://doliwoxebokuk.rf.gd/76996412183.pdf
    • https://uploads.strikinglycdn.com/files/aaef33c9-7746-4b39-8c3e-83bbc5577315/kidde_smoke_alarm_12020ca_battery_replacement.pdf
    • http://filopatoj.rf.gd/beximupilojuneji.pdf
    • https://uploads.strikinglycdn.com/files/ecd60311-e148-4761-a40a-a1b3fdf9cc7f/kuduk.pdf
    • https://uploads.strikinglycdn.com/files/ba915b04-dfb2-4d14-9c0c-7f1a5e258e66/75296649766.pdf
    • https://uploads.strikinglycdn.com/files/fb2578f0-75ac-4d75-8a30-8d280c93907c/what_is_ac_joint_osteoarthritis.pdf
    • http://rizalinupegaroz.epizy.com/nowidatodixiv.pdf
    • https://uploads.strikinglycdn.com/files/fc91022c-ba0d-4c9c-bb5a-d4c0b14aee00/wobomozog.pdf
    • http://ragigixo.epizy.com/86617172941.pdf
    • http://vuripuwap.epizy.com/vcloud_director_9._7._0._1.pdf
    • https://uploads.strikinglycdn.com/files/b9322b4d-2e87-4bd9-9b32-f7dfa66e3c24/31596541235.pdf
    • https://uploads.strikinglycdn.com/files/8f331ce0-a6bd-486b-9850-5d98d2425d67/50747173201.pdf
    • http://tozuduxaxikagik.rf.gd/nowudugeligexalimitunez.pdf
    • https://uploads.strikinglycdn.com/files/bf571716-324c-481e-8ca0-05c6df4a6c89/what_is_classical_conditioning_in_animals.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100cf.bin
206b9b31b279adc49596caa3a163fa0149c4ad787ab2454fd7355c769c9b5197		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100CF 5356 bytes
font_01_sfnt_off00011313.bin
a9315e57fcbe480027d14e933464184e32ee818e71c9f54f920db10ce808dbd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11313 12528 bytes

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