Malicious PDF — malware analysis report

Static analysis result for SHA-256 761f2560db9ef35f…

MALICIOUS

PDF

79.4 KB Authoring application: LibreOffice First seen: 2020-09-04
MD5: aa7cbf5c4f99b9ca31af38ca29b67861 SHA-1: e2d216a00b4ebb21d40da31cd645dc316a5174e6 SHA-256: 761f2560db9ef35f1c5e1001c97498ed2e2d3eabf4f1504cf68aaadb06e63ddc
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDF files, a technique often used for SEO spam or to host malicious content. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to potentially harmful content, aligning with a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://activatemelbourne.com.au/uploads/1/3/0/6/130620168/kozisaloza-galalufunoseret-tabebopofos.pdf In PDF document text
    • http://nxtgenacademy.com/uploads/1/3/0/4/130488811/kevovuwotisugej.pdfIn PDF document text
    • http://www.912foryou.com/uploads/1/3/0/8/130874212/vajirubusuna.pdfIn PDF document text
    • http://www.t6customtees.com/uploads/1/3/0/6/130621006/vevapesoka.pdfIn PDF document text
    • http://prettyunik.com/uploads/1/3/0/7/130775014/1aabbab10e0055.pdfIn PDF document text
    • http://part-timecfo.net/uploads/1/3/0/3/130323236/tunumux-jitajupubefi-donopokikevuvuw.pdfIn PDF document text
    • http://mooiskin.net/uploads/1/3/0/7/130775396/4567676.pdfIn PDF document text
    • http://katiefinkevents.com/uploads/1/3/0/9/130969335/wovugazisurod.pdfIn PDF document text
    • http://parnelldrum.studio/uploads/1/3/0/4/130488631/xipal.pdfIn PDF document text
    • http://www.korumall.com/uploads/1/3/0/5/130540176/dugunokaxazawak-kilepuduzufoz-zukawek-wokudiweteka.pdfIn PDF document text
    • http://www.daisyhillminisilkyfaintinggoats.com/uploads/1/3/0/7/130740086/moxidalitinuwe_webaxigakufuz.pdfIn PDF document text
    • http://www.mcallisterstudios.com/uploads/1/3/0/5/130551362/denawarum_zedome_mitizije.pdfIn PDF document text
    • http://morewirehouseandanimal.com/uploads/1/3/0/4/130492229/95704.pdfIn PDF document text
    • http://geek-street.jigsaw-group.co.uk/uploads/1/3/0/3/130379522/guwer_vuzos.pdfIn PDF document text
    • http://holthealth.com.au/uploads/1/3/0/6/130639869/3693932.pdfIn PDF document text
    • http://hostmaster.coach-michael.com/uploads/1/3/0/6/130604944/nejuduwuz_goropopad_jezezo_sivugezorepew.pdfIn PDF document text
    • http://pillarsofart.com/uploads/1/3/0/8/130874039/rupoxofunele.pdfIn PDF document text
    • http://eurekaarchitecture.com/uploads/1/3/0/4/130488688/7d80765be56.pdfIn PDF document text
    • http://www.motorsportsdirt.com/uploads/1/3/0/7/130739802/5a098cde.pdfIn PDF document text
    • http://thedroneinvasion.com/uploads/1/3/0/6/130621382/416a3c97a90230d.pdfIn PDF document text
    • http://anchorfertilitycare.com/uploads/1/3/0/3/130379199/sazusavefaraf-woxupaxamujir.pdfIn PDF document text
    • http://zhajinhuayulecheng.br3h.com/uploads/1/3/0/8/130814118/130814118.html#abraham+maslow+wikipedia+romanaIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE2 8984 bytes
SHA-256: d6953824df5c0cab3d4f97f5ff62ed10bda4d2de7c35790999d97264ecb0fea6
font_01_sfnt_off0000f1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C5 16200 bytes
SHA-256: 9c70772738280065930db61d29b0eee79557f8152c8dc8c27cbb99d0b6b3e0b3

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