Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1bd22560eeffb9…

MALICIOUS

PDF

74.7 KB Created: 2021-03-21 01:06:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a42fac0499262fd9f827d2e0d1507b3b SHA-1: f7f4f65ca38a74a64daf1a93a1272e330a2830d7 SHA-256: bb1bd22560eeffb9c711f931eb84fdb9ef3bd877da9a8a9ea78baa7c29834180
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that masquerades as a Craftsman LT2000 owner's manual to trick users into downloading it. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Several embedded URLs were found, some of which are hosted on free dynamic DNS services, suggesting a common tactic for distributing malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://mekiwukokoviv.weebly.com/uploads/1/3/4/8/134867966/xugevevavizite.pdf
    • https://cdn-cms.f-static.net/uploads/4458615/normal_603714888e791.pdf
    • http://subbellassecret.com/what_places_are_giving_free_food_for_veterans_dayyo2qk.pdf
    • https://cdn-cms.f-static.net/uploads/4420459/normal_602e29f23198d.pdf
    • http://mediaverifiedbadge.com/rilusilabajifozuropirezgb1r.pdf
    • https://cdn-cms.f-static.net/uploads/4381294/normal_605257d376485.pdf
    • https://static.s123-cdn-static.com/uploads/4473053/normal_60072e986e884.pdf
    • http://avit0.cc/practice_sat_math_2_questions9dq73.pdf
    • http://fb-ig-violation.com/14657486656ajqjm.pdf
    • https://cdn-cms.f-static.net/uploads/4414488/normal_601620321d166.pdf
    • http://memenakamawe.iblogger.org/kowipazusawokakoguzi.pdf
    • http://damomemisogadex.iblogger.org/65086726641.pdf
    • https://static.s123-cdn-static.com/uploads/4420776/normal_5ffe959d2e8f3.pdf
    • https://zemomopefiku.weebly.com/uploads/1/3/4/6/134614162/f4091ef98b803ff.pdf
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/katejizera_jekuf_vinawaxax.pdf
    • http://help-lnstagramcopyrights-verify.com/geologic_time_scale_lesson_planq5q9s.pdf
    • https://poxawakepuk.weebly.com/uploads/1/3/1/6/131606289/a524e35522112e.pdf
    • https://cdn-cms.f-static.net/uploads/4413969/normal_604cd3bbd1023.pdf
    • http://vefaporuzudu.iblogger.org/gugaxujakomufeba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/dRGGkpkNhSI/wb?keyword=craftsman%20lt2000%20owners%20manual%20online
    • http://reduxaxu.epizy.com/describe_girl_in_one_word_funny_answers.pdf
    • http://sirovorisolilu.rf.gd/public_speaking_topics.pdf
    • http://ropasibemufi.epizy.com/37852941049.pdf
    • http://woduzubede.epizy.com/mod_asphalt_nitro_8_airborne.pdf
    • http://likasikufam.rf.gd/bases_of_power.pdf
    • http://xofebobijo.epizy.com/wopum.pdf
    • http://pakilapawunafep.epizy.com/wudoxakilutozatisavarate.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_off0000e83e.bin
1015b5bb41a364ee3a51a51bc0752c9d8ba9e186930e7b4636096c07648a4418		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE83E 5184 bytes
font_01_sfnt_off0000f9d7.bin
5ae0efb61b81bacaffd498ddb3643e460c817c3706970ca91eb62a6238ffc5dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D7 10260 bytes

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