Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45a073a1d56189c…

MALICIOUS

PDF

47.6 KB Authoring application: Poppler-utils First seen: 2020-09-24
MD5: 615c0ad96be7a9bf7a7230672a83c328 SHA-1: 2aba62f644b43dca62b253ca807d8682b5ec480d SHA-256: f45a073a1d56189c7b6f3841b67e94581ddf07c36f60d8bc25462e7c355edfe3
192 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The primary attack pattern involves directing users to a vast collection of other PDF files hosted across numerous domains, likely for SEO spam or to distribute malicious payloads. 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://northcoloradogold.com/uploads/1/3/0/6/130604739/sorufos-misobifatomakuv.pdf In PDF document text
    • http://www.tombenjamintarot.com/uploads/1/3/0/7/130776120/raziw.pdfIn PDF document text
    • http://geniam.info/uploads/1/3/0/2/130271001/kezokopu.pdfIn PDF document text
    • http://lakechamplainwaldorfschool.com/uploads/1/3/0/2/130270982/jekalomuwel-xumitikogol-setid-jukureto.pdfIn PDF document text
    • http://doublebideuchre.org/uploads/1/3/0/4/130483184/mawuvusadeju-kelepefamazuba.pdfIn PDF document text
    • http://northpointebaptistministries.com/uploads/1/3/0/7/130739883/mifamefozetimevi.pdfIn PDF document text
    • http://www.agence-argonne.fr/uploads/1/3/0/8/130874480/mananeri.pdfIn PDF document text
    • http://www.ahdportfolio.com/uploads/1/3/0/6/130620467/wolurevakufixeluto.pdfIn PDF document text
    • http://cleaningservicesresidentialcommercial.com/uploads/1/3/0/5/130551518/tojukikelu_tibogapuna_wabubulub_lopexe.pdfIn PDF document text
    • http://anthonydkelly.com/uploads/1/3/0/2/130272458/gupamukivo.pdfIn PDF document text
    • http://hostmaster.kiranraval.co.uk/uploads/1/3/0/7/130739446/niselix.pdfIn PDF document text
    • http://talesfromsixthgrade.com/uploads/1/3/0/3/130313376/9558993.pdfIn PDF document text
    • http://artschoolgirlsareeasy.com/uploads/1/3/0/8/130814508/kiguxibimum.pdfIn PDF document text
    • http://cpanel.dsgtrustlaw.com/uploads/1/3/0/8/130814408/kufuruzodevalu_solojuzesunag_muwisadariji_zoximafo.pdfIn PDF document text
    • http://mrdbmitchell.com/uploads/1/3/0/5/130539022/powabidaluxanaji.pdfIn PDF document text
    • http://exploringcusco.org/uploads/1/3/0/4/130483733/nedifiput-petufivozaw-fisoradewesawa-vusoduxakenokip.pdfIn PDF document text
    • http://gsb-usa.com/uploads/1/3/0/3/130313368/zivokeroguj_netunila_gapew_bevixifadojutam.pdfIn PDF document text
    • http://rachellepinnow.com/uploads/1/3/0/5/130544968/popepokajari-wolomanomi-kamogavagurave.pdfIn PDF document text
    • http://ifyr6.bpmtc.com/uploads/1/3/0/7/130775594/130775594.html#difference+between+socialist+economy+and+communistIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000044ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44EE 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
font_01_sfnt_off00005c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C08 7928 bytes
SHA-256: 7419277473b9fd0fe1b197842ba362be9548c90ab249ad8da78677a7ab199f45

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