Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c4b37c5680856da…

MALICIOUS

PDF

89.2 KB Created: 2021-07-22 18:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 71e04ab03c34e59c373b4c1b7f0e1ce6 SHA-1: 12f45722e3e9862ae58725d08fa8f70ff6040be8 SHA-256: 7c4b37c5680856da7268888fb98700f68f26bf4ddabab18102697dfb9b5f02df
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV specifically identifying it as a phishing trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to lure the user to external resources. No scripts were extracted, but the overall detection indicates a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://feedproxy.google.com/~r/sq/ugae/~3/4P1vZUbBa90/square?utm_term=spells+for+green+witches
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f3586f0dbab00e46e30713/1626560623125/bovabetix.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f144d08ed7c6554e7c9987/1626424529110/riwuvorekegipe.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1c2b81c25861d0ad5b5db/1626456760453/vehicle_repair_and_maintenance_contract_sample.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f98fbb48fe4e71fb1535cc/1626967995255/78310006208.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f5dd0749d33d63aa30e61f/1626725640058/irregular_verbs_list_with_tamil_meaning.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2f9df783e880aac7afb30/1626536415578/song_of_ocol_analysis.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e94f3e58c6623f0383bc27/1625902910844/how_to_change_the_image_into.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e932ca27127e6804168e07/1625895626892/93819255648.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f27b20d68f3225905062a7/1626503968194/what_to_tell_about_yourself_in_a_job_interview.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f5d1130050dd35bbdcc56a/1626722579545/piwukusolikuruwezej.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec975ca1b53f2c225f8515/1626117980347/describe_how_energy_is_transferred_by_conduction_convection_and_radiation.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f9899e3f3fc43c4a2c26b1/1626966431011/free_adobe_after_effects_logo_reveal_templates.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e81064dbb92d34f5b0c47a/1625821284576/section_19_of_family_court_act.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7ea182b4c978cf411270/1626111649221/sikipepetudeloro.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f71656eebc486acef84802/1626805846242/vubuxovesuxibur.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60efeec36611482e0a901ed2/1626336963586/wiliwujugewilavipul.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f5ab186776e8181adeabe0/1626712856440/82009713493.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f5a1c8d7719b762da563f9/1626710472892/access_of_symmetry.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee081a8e3fff2bd3bc33b4/1626212378451/gre_practice_test_with_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f0103634f25751eec2ebbb/1626345526625/37117238857.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e818057d3b385c94b7e633/1625823238065/befufajawifafolenula.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f6a1eff003fd3781f92f1b/1626776047385/check_your_vocabulary_for_ielts_4th_edition.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f5f7a56c325421bd22e73c/1626732454131/jotiwenonagonujewibuniro.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f2f2d0ebca9b5ae8e72ab6/1626534608325/39363087888.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_off0000fc69.bin
9fed0597455cd3f71d491e169b76672fb29a8febfe1589b451f25de3c2b016a9
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC69 10756 bytes
font_01_sfnt_off0001151f.bin
114ec028567bc45b83ea1839798d02732b7f56ad10edf53167a776e0b8d1d397
pdf-font-stream PDF embedded font (sfnt) at offset 0x1151F 16388 bytes
font_02_sfnt_off00013f9c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13F9C 16792 bytes