Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0fdba12961cd262…

MALICIOUS

PDF

99.2 KB Created: 2021-07-23 18:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 70580016684fed20788777e59a8c7347 SHA-1: 201fcfc6ee54d3351eb45f45294ba01e8c4f3e38 SHA-256: a0fdba12961cd262246392bfb2d61863cace0c55a25031c361ca3de017d0d15b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'infrive.ru' was extracted, suggesting a phishing or redirection attempt. While no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of a phishing 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://infrive.ru/square?utm_term=how+to+tell+what+hot+wheels+are+worth+money
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8b3e2b2c1ff66526fc84c/1625863139041/furnished_apartments_for_sale.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0e15cf9088a713e663dfa/1626399069231/pemumakofalomabatozam.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f40f9b1ad9bf1c32bb042d/1626607515934/new_pan_card_correction_form.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f3988bdb752c5e49aecb3f/1626577035966/cool_minecraft_name_tags.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f05c85173e047f00a5cfe1/1626365061876/the_art_of_conflict_management.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f04dc5b58f54589d07e831/1626361286266/pomozapemobirisoviju.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f28ef04f27972c603892c0/1626509040253/the_european_convention_on_human_rights.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f49ca9d9389f5e809c1e0f/1626643625603/cell_cycle_regulation_activity_answers.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee31e9aa539923b5859267/1626223081694/7053950543.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f962ec48fe4e71fb11aa02/1626956524456/wafaparoxa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee14fa2af4c01978f9d20b/1626215675062/another_word_for_worth_it.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f5c0ab0a6d280bf6b43c3d/1626718379343/sexy_text_to_my_husband.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f9c399593f852ee963416d/1626981273915/muzabokeromuk.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f8e97dbc27a573ccbfd374/1626925437959/peter_grill_ending.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e818a94b964f05b84a75ad/1625823401431/intended_tamil_meaning.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee5d60588fb5669516b44a/1626234208748/16190126755.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec802c20781e4bb11b8935/1626112044088/4870088655.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9085f6fc466b5bf43ff2/1626116229905/song_wish_grandpas_never_died.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f32347a9adb72803a47865/1626547016044/97026029476.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0030ed9659e2786462189/1626342158175/mm_water_to_mmhg.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f8ce1fbc27a573ccbe03a6/1626918432485/probability_and_statistics_for_engineers_ravichandran.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://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_off00012148.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12148 16792 bytes
font_01_sfnt_off0001395a.bin
12007b89f434015c10e5176a4beb22c446ee3b6745245dd753500d90f4419574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1395A 17388 bytes
font_02_sfnt_off000166df.bin
e23ed5abe598e61be306abf0cdddaa7c2fc66b0e711c7701f5b306e91e63948a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x166DF 10472 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.