Malicious PDF — malware analysis report

Static analysis result for SHA-256 c896f857e43ee313…

MALICIOUS

PDF

53.6 KB Authoring application: LibreOffice First seen: 2020-09-24
MD5: e7ac128787d1c4772547827fd4eaa794 SHA-1: 66d7a9b85f8e90de8189b72151f01d24360aa096 SHA-256: c896f857e43ee313d1e627647596c9647f07fc4953aa30c3b64b92c126929867
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a critical alert for a link farm containing 31 external PDF links. The ML classifier also returned a high confidence score for maliciousness. The embedded URLs suggest a phishing or content distribution scheme, likely aiming to redirect users to malicious sites or download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lenceriavanity.es/uploads/1/3/0/5/130552073/kawowin_dijawoxifef_vasurabiluji_tefonejurije.pdf In PDF document text
    • http://charliechortle.com/uploads/1/3/0/4/130436244/muzugeko_xerip_vasunuw_xokenab.pdfIn PDF document text
    • http://metzgersu.com/uploads/1/3/0/4/130477249/mokos-fegus-witute.pdfIn PDF document text
    • http://insideou.net/uploads/1/3/0/7/130776085/nudoze.pdfIn PDF document text
    • http://mindfulnessforteensaustin.com/uploads/1/3/0/7/130775491/mafobup.pdfIn PDF document text
    • http://wrinkleddogs.com/uploads/1/3/0/2/130289721/ddecb631a19b.pdfIn PDF document text
    • http://mommyandbeeboutique.com/uploads/1/3/0/6/130620828/zeveradozalewer.pdfIn PDF document text
    • http://nmtitlesolutions.com/uploads/1/3/0/7/130739006/febid.pdfIn PDF document text
    • http://comohaceresto.com/uploads/1/3/0/6/130604393/zagipodidimevalitu.pdfIn PDF document text
    • http://covingtoneconomymeatmarket.com/uploads/1/3/0/3/130379244/1835545.pdfIn PDF document text
    • http://shop.akcesoriacorp.com/uploads/1/3/0/5/130546153/nunuxido.pdfIn PDF document text
    • http://lightjab.net/uploads/1/3/0/7/130739127/digimuxe.pdfIn PDF document text
    • http://messianicmetis.ca/uploads/1/3/0/6/130621510/pojit.pdfIn PDF document text
    • http://youngwildamerican.com/uploads/1/3/0/2/130288333/tupakip-davisuterog-libeva-pekutipepivoj.pdfIn PDF document text
    • http://myentelechy.com/uploads/1/3/0/5/130590108/0fec179b8c09b.pdfIn PDF document text
    • http://www.flourishdevelopment.com/uploads/1/3/0/6/130621709/3300532.pdfIn PDF document text
    • http://plantationpest.net/uploads/1/3/0/4/130435652/fobotoranuge.pdfIn PDF document text
    • http://bmcl.us/uploads/1/3/0/7/130738553/mobedafavigiwigaf.pdfIn PDF document text
    • http://rajadiveisland.com/uploads/1/3/0/4/130483193/2186680.pdfIn PDF document text
    • http://neotribes.com/uploads/1/3/0/3/130323697/funab_jaduzafudapenin_babodo_wizaretovebed.pdfIn PDF document text
    • http://northwestlouisianaautomationgroup.com/uploads/1/3/0/2/130271132/5069621.pdfIn PDF document text
    • http://eveliabautista.com/uploads/1/3/0/4/130477278/betetivitaro.pdfIn PDF document text
    • http://progressivecommunityoutreach.com/uploads/1/3/0/7/130775275/8282515.pdfIn PDF document text
    • http://adsl-63-204-18-2.benefitplans.org/uploads/1/3/0/7/130738693/130738693.html#exotic+breeds+of+cowIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000169d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169D 11648 bytes
SHA-256: 3c4777ed80a570110f955ece1ea408ea9791a9a6e55222e8534a1b9d6856fe04

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