Malicious PDF — malware analysis report

Static analysis result for SHA-256 354bef178e294b8b…

MALICIOUS

PDF

38.1 KB Authoring application: pdf-parser First seen: 2020-09-07
MD5: 770dd36141c1dab2852c272861914547 SHA-1: e7a73658971c0a5e25fbe75897e92ec04c883166 SHA-256: 354bef178e294b8b9241ef6cc1b417fc08229a187f884c38ed86fef3ede8dfd3
200 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning tactic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further indicates a phishing or traffic redirection intent. The presence of a visual download button and call-to-action phrases reinforces the lure to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://serp-online.org/uploads/1/3/0/5/130588650/defiwowis_tosonixifofi_japitug.pdf In PDF document text
    • http://dearrouge.ca/uploads/1/3/0/4/130488243/rotexojewono.pdfIn PDF document text
    • http://webdisk.bexleycelebrations.org/uploads/1/3/0/7/130739049/bemabebikare-xabofatipi.pdfIn PDF document text
    • http://studentloandebtforums.com/uploads/1/3/0/7/130776760/6504377.pdfIn PDF document text
    • http://mzansinewsonline.com/uploads/1/3/0/5/130550763/mamokopetodeda_zuroraneju_rarameruwudogow.pdfIn PDF document text
    • http://plataformaarquitectura.net/uploads/1/3/0/7/130775679/25423bebc.pdfIn PDF document text
    • http://dungeonplace.com/uploads/1/3/0/5/130590618/votako.pdfIn PDF document text
    • http://thinkglobaly.com/uploads/1/3/0/6/130603956/tidifuzukil.pdfIn PDF document text
    • http://agapekennelswhitewater.com/uploads/1/3/0/6/130639875/3794937.pdfIn PDF document text
    • http://nebraskansunitedforthegoodlife.net/uploads/1/3/0/6/130639849/7377940.pdfIn PDF document text
    • http://altercredo.com/uploads/1/3/0/5/130544625/xajotanuxewevonivona.pdfIn PDF document text
    • http://buttermilkpink.com/uploads/1/3/0/3/130379611/taxupodukis-lefasaku.pdfIn PDF document text
    • http://www.vetemedic.org/uploads/1/3/0/7/130775698/pitisinoxakusidepiga.pdfIn PDF document text
    • http://parketvloerenschuren.be/uploads/1/3/0/6/130640125/gelalavubases-moviguna-mofuros-xumugilujinu.pdfIn PDF document text
    • http://datenightporn.com/uploads/1/3/0/3/130379625/18332.pdfIn PDF document text
    • http://ayudandoteacrecer.com/uploads/1/3/0/6/130620963/45302fb50.pdfIn PDF document text
    • http://fergiebr.com/uploads/1/3/0/7/130776164/xasoride.pdfIn PDF document text
    • http://brite-technology.net/uploads/1/3/0/2/130289345/soxukora.pdfIn PDF document text
    • http://ns1.greatmanagement.biz/uploads/1/3/0/5/130543685/bovewowokina.pdfIn PDF document text
    • http://gracecartercapstone.com/uploads/1/3/0/4/130476010/130476010.html#ap+dsc+pet+hall+tickets+2018In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3473 8436 bytes
SHA-256: 63a1b22f7fdd4dc4b8bb6b51f7ea12759e7eb7e596b2210175d86a82a6dce4ba