Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cc9f3392638c04…

MALICIOUS

PDF

444.0 KB Created: 2022-06-04 21:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 3972857613de36fcf8454b3272b27c40 SHA-1: 6d4a4fcf77dd04f9470ab15e2c2b7f4d50c5d037 SHA-256: c8cc9f3392638c04982b6129cd9871b525648415f0f4df6c32b7eab99f50165e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The file was identified as malicious by ClamAV and an ML classifier, with a high risk score. A PDF_URI heuristic fired, indicating an external URI pointing to 'https://lazav.co.za/XSRYdR1H?utm_term=worksheet+human+body+organs+worksheet+answers+answer+sheets'. This URL is likely used to deliver a phishing lure or a secondary payload. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5880

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://lazav.co.za/XSRYdR1H?utm_term=worksheet+human+body+organs+worksheet+answers+answer+sheets
    • https://zejinimab.weebly.com/uploads/1/3/1/8/131856072/tojapirupof-banusawajobi-gulojimo-mojome.pdf
    • https://baboromet.weebly.com/uploads/1/3/1/6/131606353/wedezobiru-banusom-xiraw-repifufadib.pdf
    • https://gamunodeda.weebly.com/uploads/1/3/4/7/134765824/zefebazasamoboxaxika.pdf
    • https://rossbeede.com/userfiles/file/63135135932.pdf
    • https://rexugikifobober.weebly.com/uploads/1/4/1/2/141288867/pikemiserotokazel.pdf
    • https://pawiwojofidinof.weebly.com/uploads/1/3/4/4/134458390/fdda3bc3c1bdf9c.pdf
    • https://favexolifuluk.weebly.com/uploads/1/3/6/0/136092880/volozuvoruwidez.pdf
    • https://horecathanglong.com/uploads/file/kakeso.pdf
    • https://tazusarativiwu.weebly.com/uploads/1/3/4/5/134510609/887765964ca.pdf
    • https://lesapexif.weebly.com/uploads/1/3/1/6/131637780/wawixok-vuteperitefe.pdf
    • http://re-ezumi.com/admin/kcfinder/upload/files/fulapukujivako.pdf
    • https://jumiseruzig.weebly.com/uploads/1/4/1/6/141625052/jojifiletelozu-rekefoma-gimum-pefonoratevov.pdf
    • https://masupajasil.weebly.com/uploads/1/4/1/5/141552164/zibivinewugikat.pdf
    • https://munerotilaxamo.weebly.com/uploads/1/3/4/4/134476206/munovodit-guxemawikudux-xajaxapizivis-gobalupipil.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fb79d4987ff---notaj.pdf
    • https://vanchuyenduongsat.vn/upload/files/vekakujoredarixisuradero.pdf
    • https://pusesame.weebly.com/uploads/1/3/4/6/134662227/petomawe.pdf
    • https://jizirazizeki.weebly.com/uploads/1/3/4/5/134509590/4603897.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/nj4guej70cmnmkifvfqrmk7q2r/14388959697.pdf
    • https://fapurexetekuwud.weebly.com/uploads/1/3/4/5/134508670/gugonoparame_taligewox.pdf
    • https://mokaredoraxo.weebly.com/uploads/1/3/4/0/134095924/kitojuvawu.pdf
    • https://nexojirinetu.weebly.com/uploads/1/3/1/1/131164364/7168.pdf
    • https://zidimegaga.weebly.com/uploads/1/3/0/9/130969389/xipitejidiwagetixo.pdf
    • https://ninitirasaru.weebly.com/uploads/1/3/5/3/135317350/sizimekapute.pdf
    • https://kiwitelovig.weebly.com/uploads/1/3/4/3/134358902/visivan.pdf
    • http://slovbau.sk/test/userfiles/file/xozexogogizonadazoviguvo.pdf
    • https://rejosunofefi.weebly.com/uploads/1/3/0/8/130874376/de87882a81e.pdf
    • https://wopenugepaned.weebly.com/uploads/1/3/1/0/131069893/wofewovareluner_rixepekiz_xajokazivep.pdf
    • https://dovenegipejapu.weebly.com/uploads/1/3/0/7/130740438/2465281.pdf
    • https://mpksieradz.pl/upload/file/17448955273.pdf
    • https://xidaxawefitorat.weebly.com/uploads/1/3/5/9/135958331/kogijisuwiza.pdf
    • https://huanghecables.com/d/files/wadizikedegofewatonusa.pdf
    • https://zanomegujinax.weebly.com/uploads/1/3/4/8/134873542/426530.pdf
    • https://gunapozebufe.weebly.com/uploads/1/3/4/3/134316646/xirewot.pdf
    • https://kegigotunexopiw.weebly.com/uploads/1/3/4/4/134400153/bumaliko.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_off00067b73.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B73 16792 bytes
font_01_sfnt_off0006938a.bin
8bd995cbf3b400040ae8a050d48fb6e2b6d8ac12bcca3dac76d61ee33ad423e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6938A 11080 bytes
font_02_sfnt_off0006ad13.bin
f4c51ddbd93e33e749822f532ebf874266acd3e7945e0b4831525972324babe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD13 19456 bytes

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