Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e908b14b43918d6…

MALICIOUS

PDF

41.3 KB Created: 2020-03-08 13:03:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 857129345ce3cd6def0874c33ec65824 SHA-1: 064e2a8f388f07d254e67a9a329cacfe94ea6e52 SHA-256: 2e908b14b43918d6e912f7aca2249872cf116373726b705bab626ac621d5f6d3
176 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF contains a large number of external links, many pointing to PDF files on various domains, indicating a link farm or SEO spam tactic. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests the document may contain instructions for executing commands, potentially to download or redirect to malicious content. The presence of multiple external URLs, including one that appears to be a direct link to an HTML file, supports the attack pattern of luring users to external sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://teamgls.com/uploads/1/3/0/3/130312976/130312976.html#throttle+pedal+position+sensor+a+circuit+range+performance PDF link annotation
    • http://www.pmc-klee.de/uploads/1/3/0/8/130874620/jujiwebovajitix.pdfIn PDF document text
    • http://www.spollaine.com/uploads/1/3/0/6/130639539/wevomen.pdfIn PDF document text
    • http://www.palleture.co.uk/uploads/1/3/0/5/130590367/defitef-kubaxig.pdfIn PDF document text
    • http://www.brooklynbouquets.com/uploads/1/3/0/6/130621214/dunovefizogebu_vakanopetajom_xibizusulalato.pdfIn PDF document text
    • http://micahpatt.com/uploads/1/3/0/5/130540072/duradapipewepikuvoj.pdfIn PDF document text
    • http://www.cassieorduno.com/uploads/1/3/0/6/130620154/suxopo-buxurok-fesatotagifenu.pdfIn PDF document text
    • http://nichellejensen4orem.com/uploads/1/3/0/2/130289236/wavebowomaxafod.pdfIn PDF document text
    • http://ministerioslagloriaestuyajesus.org/uploads/1/3/0/3/130379232/0f2d6.pdfIn PDF document text
    • http://velawedding.com/uploads/1/3/0/4/130489527/7834066.pdfIn PDF document text
    • http://deardrew318.com/uploads/1/3/0/5/130588716/judiram.pdfIn PDF document text
    • http://ctotogo.com/uploads/1/3/0/5/130589223/jeposanitajafebeni.pdfIn PDF document text
    • http://karenleehodges.com/uploads/1/3/0/4/130483204/pozakidolunabiro.pdfIn PDF document text
    • http://paediatricmdspatientgroup.co.uk/uploads/1/3/0/9/130970003/susegapefigi.pdfIn PDF document text
    • http://cesun2018.org/uploads/1/3/0/6/130605116/lababitisajawu-vifimulapiwag-pinifiju.pdfIn macro / runtime command snippet
    • http://nabeelreviews.com/uploads/1/3/0/6/130620371/9748638.pdfIn macro / runtime command snippet
    • http://carriehohmann.com/uploads/1/3/0/5/130539309/263469.pdfIn PDF document text
    • http://upinarts.com/uploads/1/3/0/4/130490668/woxupotufaveman-setugamiroweke.pdfIn PDF document text
    • http://the-esp.com/uploads/1/3/0/5/130590383/8039904.pdfIn PDF document text
    • http://campiq.net/uploads/1/3/0/8/130815115/sedanokagutipe.pdfIn PDF document text
    • http://beyondstockllc.com/uploads/1/3/0/4/130476873/mesen.pdfIn PDF document text
    • http://youngwildamerican.com/uploads/1/3/0/5/130588867/da3b6dad9d43.pdfIn PDF document text
    • http://www.mummydoctorlife.com/uploads/1/3/0/5/130551554/d1b3fc1d574d8c.pdfIn PDF document text
    • http://mta-sts.vancourtcustomcabinetry.com/uploads/1/3/0/4/130489669/wajesabiko.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off00007880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 7952 bytes
SHA-256: 450505e496338f6b5aa18dbcec7faa315d5a2ea039bfb4d2ee60b05506b8ca38

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