Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fb2fb8c27396718…

MALICIOUS

PDF

42.0 KB Authoring application: Soda PDF First seen: 2020-09-24
MD5: 1819a8d56c03cc9f425c76e2d0023149 SHA-1: ec841a82698be1d2eefee0a2f28f1715a6677a92 SHA-256: 4fb2fb8c273967189de86f2fda3ce403556c3436ce30051181d0f852a8dac3c8
272 Risk Score

Malware Insights

MITRE ATT&CK
T1566.003 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. One heuristic specifically identified an invisible link to a suspicious domain, suggesting a phishing or malware delivery attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://aurasalontn.com/uploads/1/3/0/5/130589252/kaxidobobadato_vokaxowuporu.pdf In PDF document text
    • http://phonesex4cheap.com/uploads/1/3/0/7/130776034/b8cf61215.pdfIn PDF document text
    • http://blinebeachbar.com/uploads/1/3/0/6/130604202/200281bfd1.pdfIn PDF document text
    • http://redteam3.net/uploads/1/3/0/7/130739952/8749578.pdfIn PDF document text
    • http://mtchoirs.com/uploads/1/3/0/5/130539899/razamejibodujedozon.pdfIn PDF document text
    • http://artbyjonmcgaa.com/uploads/1/3/0/6/130639648/9521173.pdfIn PDF document text
    • http://childrensxmasparty.fun/uploads/1/3/0/5/130589385/9529186.pdfIn PDF document text
    • http://mermaidicamusic.com/uploads/1/3/0/7/130774993/2557675.pdfIn PDF document text
    • http://cwegcommunity.org/uploads/1/3/0/4/130491852/d25e499a.pdfIn PDF document text
    • http://growmichiganchurches.com/uploads/1/3/0/7/130739112/supigawekod.pdfIn PDF document text
    • http://iclubgood.net/uploads/1/3/0/5/130590475/sezolek-kesegitetafu-lijobatek-zuvoluwo.pdfIn PDF document text
    • http://agapa.net/uploads/1/3/0/4/130435842/tutinetuxuko.pdfIn PDF document text
    • http://onlinesecurityservice.site/uploads/1/3/0/4/130483924/3472360.pdfIn PDF document text
    • http://thecottonlickers.com/uploads/1/3/0/3/130313038/xawabazobomewun-zuguwilonutimu.pdfIn PDF document text
    • http://charleschien.com/uploads/1/3/0/5/130588957/tajifapupujuda.pdfIn PDF document text
    • http://branchxpress.net/uploads/1/3/0/6/130639170/jiteta_gefexelijener_lokopokoxewu_dupebisuk.pdfIn PDF document text
    • http://windowrestorationspecifications.com/uploads/1/3/0/4/130476587/87963.pdfIn PDF document text
    • http://nomoreheroesnovel.com/uploads/1/3/0/7/130775911/bagen.pdfIn PDF document text
    • http://tlcprimateretreat.org/uploads/1/3/0/7/130738863/vipeg-vades.pdfIn PDF document text
    • http://thenothingman.com/uploads/1/3/0/6/130621459/buleguzirinoxonunudu.pdfIn PDF document text
    • http://therockbridgeport.com/uploads/1/3/0/7/130739074/7247791.pdfIn PDF document text
    • http://www.neontetrapr.com/uploads/1/3/0/7/130775164/vogawedoguneva-kinajuma.pdfIn PDF document text
    • http://appliedbehavioranalysisalbany.com/uploads/1/3/0/7/130775331/lezekibolan_duvivuturoxefi_perujegejizinib.pdfIn PDF document text
    • http://eurekamobilevillage.com/uploads/1/3/0/5/130545189/runabelatisugu.pdfIn PDF document text
    • http://morningpeople.club/uploads/1/3/0/6/130621533/130621533.html#software+para+juntar+varios+pdf+en+uno+soloIn PDF document text

Related samples 3

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_off00003f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F2B 8972 bytes
SHA-256: 3c2646849d37df099564cecdb502e31eebb4c79de92f77286f93be77bf10f5ae

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